READ A LINKED LIST THAT WAS SAVED IN A FILE?

[Anonymous]

How I read a linked list that was saved in a file?

These are the global variables:

struct mappointlabel
{ char mappoint;
int color;
};
mappointlabel maplab[22][80];

typedef struct mapslist
{ mappointlabel maplab[22][80];
char mapname[20];
int mapnumber;
mapslist next;
}maps;
maps novoa, nnew, first, last, aux1, aux2, var_arcmap;
FILE *arcmap;

And here is the part where I save a list to a file and then try to read it:

void allocatemap(int)
{ nnew=(maps *)malloc(sizeof(maps));
if (nnew == NULL)
{ printf("\n Insulficient memory");
exit(1);
}
if (first== NULL)
{ first=last=nnew;
nnew->mapnumber=1;
nnew->next= NULL;
}
else
{ nnew->next= NULL;
last->next=nnew;
last=nnew;
nnew->mapnumber=first->mapnumber+1;
}

strcpy((nnew->mapname), novoa.mapname);
for (i=0; i<22; i++)
for (j=0; j<80; j++)
{ nnew->maplab[i][j].mappoint = maplab[i][j].mappoint;
nnew->maplab[i][j].color= maplab[i][j].color;
textcolor(nnew->maplab[i][j].color);
gotoxy(j+1,i+3);
printf("%c", nnew->maplab[i][j].mappoint);
}
system("cls");
arcmap= fopen("gamemaps.gfl", "a+");
fwrite(nnew, sizeof(mapslist),1,arcmap);
fread(nnew, sizeof(mapslist),1,arcmap);
i=0;
j=0;
while(!feof(arcmap))
{ printf("%c", nnew->maplab[i][j].mappoint);
fread(nnew, sizeof(mapslist),1,arcmap);
i+=1;
j+=1;
}
getchar();
}

It don't write nothing in the screen.

if I try this (USING '&' and changing to write the map name) it show strange characters like trash in memory:

system("cls");
arcmap= fopen("gamemaps.gfl", "a+");
fwrite(nnew, sizeof(mapslist),1,arcmap);
fread(&nnew, sizeof(mapslist),1,arcmap);
i=0;
j=0;
while(!feof(arcmap))
{ printf("%s", nnew->mapname);
fread(&nnew, sizeof(mapslist),1,arcmap);
}
getchar();
}

[Anonymous]

I MADE IT. hahaha. :)
The program is working now. I was not able to load my map becouse I need to recreate the nnew space in memory to load the file content into it.

Now this part is working:

void allocatemap(int)
{ nnew=(maps *)malloc(sizeof(maps));
if (nnew == NULL)
{ printf("\n Insulficient memory");
exit(1);
}
if (first== NULL)
{ first=last=nnew;
nnew->mapnumber=1;
nnew->next= NULL;
}
else
{ nnew->next= NULL;
last->next=nnew;
last=nnew;
nnew->mapnumber=first->mapnumber+1;
}

strcpy((nnew->mapname), novoa.mapname);
for (i=0; i<22; i++)
for (j=0; j<80; j++)
{ nnew->maplab[i][j].mappoint = maplab[i][j].mappoint;
nnew->maplab[i][j].color= maplab[i][j].color;
textcolor(nnew->maplab[i][j].color);
gotoxy(j+1,i+3);
printf("%c", nnew->maplab[i][j].mappoint);
}
system("cls");
arcmap= fopen("gamemaps.gfl", "a+");
fwrite(nnew, sizeof(mapslist),1,arcmap);
fseek(arcmap, 0,SEEK_SET);
fread(nnew, sizeof(mapslist),1,arcmap);
for (i=0; i<22; i++)
for (j=0; j<80; j++)
{ gotoxy(j+1,i+3);
textcolor(nnew->maplab[i][j].color);
printf("%c", nnew->maplab[i][j].mappoint);
fread(nnew, sizeof(mapslist),1,arcmap);
}
fclose(arcmap);
getchar();
}

And this one in the begin too:

nnew=(maps *)malloc(sizeof(maps)); <---- Alocating nnew to receive file data.
arcmap= fopen("gamemaps.gfl", "a+");
fseek(arcmap, 0,SEEK_SET);
fread(nnew, sizeof(mapslist),1,arcmap);
for (i=0; i<22; i++)
for (j=0; j<80; j++)
{ gotoxy(j+1,i+3);
textcolor(nnew->maplab[i][j].color);
printf("%c", nnew->maplab[i][j].mappoint);
fread(nnew, sizeof(mapslist),1,arcmap);
}
getchar();

I hope I can save and load a large linked list now.

Thanks for help.

[Osito]

I don't use fwrite and fread much, but I think fwrite leaves the file pointer at the end of the file, so to fread it back you'd need to rewind by the size of your structure.

[Anonymous]

How I do it??

[Osito]

Google rewind c++.

You might want fseek instead, I'm not sure (google fseek c++)

The internet. It's like magic.

[Anonymous]

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My file have it inside (vamosnessa is a string):

 0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  vamosnessa

[Anonymous]

I think I understood you. I used fseek. But when I close my program and try to load the file it crash.

[Anonymous]

IF I put:

void main(int)
{
system("cls");
arcmap= fopen("gamemaps.gfl", "a+");
fseek(arcmap, 0,SEEK_SET);
fread(first, sizeof(mapslist),1,arcmap);
i=0;
j=0;
while(!feof(arcmap))
{ gotoxy(i+1,j+1);
printf("%s", first->mapname);
fread(first, sizeof(mapslist),1,arcmap);
i+=1;
j+=1;
}
getchar();
}

The program crash.

[Osito]

You should always check for NULL when opening a file (after fopen make sure arcmap isn't NULL). Trying to fread with arcmap NULL will cause a crash.

I'm not sure what would happen if your input file doesn't have enough bytes to fill one mapslist. You should probably check the return value of fread each time as well.

[Anonymous]

The problem you face is well known and studied. Google about "serialize".

[Anonymous]

arcmap is NULL. What I do???

[Osito]

Figure out why. :) Is that filename valid? Is your program looking in the right folder for it? Does another program have the file open, thus preventing yours from opening it as A+?

[Anonymous]

arcmap is NULL before I open the file, then after it, its nomore NULL.

[Osito]

That's good, that's how it should be. So you have to figure out which line causes it to crash. For something like what you're doing, I often stick in getchar() in front of the line I suspect and see if it crashes before it gets to that point. I'm sure there are better ways with debuggers and such, but to each his own.

[Anonymous]

The bad line is the: printf("%c", first->maplab[i][j].mappoint); cause if I delet it the program work. But this is the most important line, the line that will show me what is in the file.

[Osito]

You'd have to show me more code. I remember seeing something earlier where you were incrementing i and j each time through a loop. Since maplab is 22 x 80, you might be exceeding the max with i at some point.

[Anonymous]

This is the entire code, its more than 1400 lines:
I used &(check the end of the program) and it show me strange characters. It accurs also in the start, in function main.

include <stdio.h>

include <windows.h>

include <stdlib.h>

include <conio2.h>

include <iostream>

using namespace std;

void resumegame(int);
void newgame(int);
void loadgame(int);
void savegame(int);
void selectprofile(int);
void options(int);
void help(int);
void sdk(int);
void quit(int);
void mainmenu(int);
void printmain(int);
void asciilist(int);
void initmapeditor(int);
void setgamekeys(int);
void centralize(int, char[80]);
void intro(int);
void buildmap(int);
void printmap(int, int);
void mapeditor(int);
void savemap(int);
void loadmap(int);
void allocatemap(int);

int buildmaincharacter(int);

char maincharacter[3][3], a, b, selection, maincharacterdow[1][6], soundonoff[3];
char key, keyup, keydown, keyright, keyleft, keyuse, keypause, currentkey, mapchar1, mapchar2;

int i,j, numpas, charstate, direction, readyquit, selecnum, selecclear, sound, position, pos, mapnunber, mapopen, mapname;

char map[22][80];

struct mappointlabel
{ char mappoint;
int color;
};
mappointlabel maplab[22][80];

typedef struct mapslist
{ mappointlabel maplab[22][80];
char mapname[20];
int mapnumber;
mapslist next;
}maps;
maps novoa, nnew, first, last, aux1, aux2, var_arcmap;
FILE *arcmap;

typedef struct game
{ int mapnunber;
int points, level, ammo1, ammo2, ammo3, ammo4, money, health;
} gamefile;
gamefile var_arq;
FILE *arq;

/===================================== MAIN ===================================/
main()
{ keyup='w';
keydown='s';
keyright='d';
keyleft='a';
keypause='p';
keyuse='k';

arcmap= fopen("gamemaps.gfl", "a+");
fseek(arcmap, 0,SEEK_SET);
fread(&first, sizeof(mapslist),1,arcmap);
for (i=0; i<22; i++)
for (j=0; j<80; j++)
{ fread(&first, sizeof(mapslist),1,arcmap);
printf("%c", &first->maplab[i][j].mappoint);
}
getchar();

selection=175;

centralize(10, "PLEASE TURN OFF YOUR CAPS LOCK, IF ITS ON THE GAME WILL NOT WORK PROPERLY");
centralize(14, "PRESS ANY KEY TO CONTINUE");
getch();
system("cls");
centralize(8, "GAME BY:");
centralize(13, "ANTHONY GAUDINO");
centralize(15, "AND\n\n");
centralize(17, "FILIPE EDIMUNDO");
_sleep(1);
system("cls");

centralize(6, "DO YOU WANT TO WATCH GAME INTRO?");
gotoxy(39, 10);
printf("YES");
gotoxy(39, 12);
printf("NO");
gotoxy(37,10);
printf("%c", selection);
selecnum=1;

while (readyquit!=1)
{ key='\0';
key=getch();

 if (key==keyup)
 { selecclear=selecnum;
   if (selecnum==1) 
      selecnum=2;
   else
   if (selecnum!=1)
      selecnum=selecnum-1;
 }
 if (key==keydown)
 { selecclear=selecnum;
   if (selecnum==2)
      selecnum=1;
   else
   if (selecnum!=2)
      selecnum=selecnum+1;
 }

 if (key==keyuse)
 { switch (selecnum)
   { case 1:     
     intro(1);
          break;  
     case 2:
     mainmenu(1);
          break;
   }
 }

 switch (selecclear)
 { case 1:
   gotoxy(37,10);
   printf(" ");
        break;
   case 2:
   gotoxy(37,12);
   printf(" ");
        break;
 }

 switch (selecnum)
 { case 1:
   gotoxy(37,10);
   printf("%c", selection);
        break;
   case 2:
   gotoxy(37,12);
   printf("%c", selection);
        break;
 }

}

gamefile gamef;

mainmenu(1);
/ =====================================================/
arq= fopen("game.gfl", "w+");
if (!arq)
printf ("Erro na abertura do arquivo.");

 if (fwrite(&var_arq, sizeof(var_arq), 1, arq)!=1);
   printf("/n Erro de gravaçao");

  fread(&var_arq, sizeof(var_arq), 1, arq);

/ =====================================================/

}

/================================= RESUME GAME ================================/
void resumegame(int a)
{ for (i=0;i<23;i++)
for (j=0;j<81;j++)
{
map[i][j]='o';
gotoxy(j, i);
printf("%c", map[i][j]);
}

buildmaincharacter(charstate);
key='\0';
while (key!='=')
{
key='\0';

  key=getch();

  if (key!=keyup && key!=keydown && key!=keyright && key!=keyleft)
    charstate=0;

  if (key==keyright)
  {  charstate=1;
     numpas+=1;
  }
  if (key==keyleft)
  {  charstate=2;
     numpas-=1;
  }
  if (key==keyup)
  {  charstate=3;
  }
  if (key==keypause)
  {  mainmenu(1);
  }
  if (key==keydown)
  {  charstate=4;
  }
  buildmaincharacter(charstate);

}
}

/============================= BUILD MAIN CHARACTER ===========================/
int buildmaincharacter(int charstate)
{ if (charstate==0)
{ for (i=19;i<22;i++)
for (j=0;j<3;j++)
{ gotoxy(j+numpas, i);
printf("%c", maincharacter[i-19][j]);
}
}

/ =====================================================/

if (charstate==1)
{ _sleep(200);
for (i=19;i<22;i++)
for (j=0;j<3;j++)
{ gotoxy(numpas-1, i);
printmap(i, j);
}
maincharacter[2][0]=32;
maincharacter[2][1]=179;
maincharacter[2][2]=32;

 for (i=19;i<22;i++)
 for (j=0;j<3;j++)
 {  gotoxy(j+numpas, i);
    printf("%c", maincharacter[i-19][j]);
 }

 _sleep(200);
 for (i=19;i<22;i++)
 for (j=0;j<3;j++)
 {  gotoxy(numpas-1, i);
    printmap(i, j);
 }
 maincharacter[2][0]=32;
 maincharacter[2][1]=179;
 maincharacter[2][2]=92;
 for (i=19;i<22;i++)
 for (j=0;j<3;j++)
 {  gotoxy(j+numpas, i);
    printf("%c", maincharacter[i-19][j]);
 }

}

/ =====================================================/

if (charstate==2)
{ _sleep(200);
for (i=19;i<22;i++)
for (j=0;j<3;j++)
{ gotoxy(numpas+3, i);
printmap(i, j);
}
maincharacter[2][0]=32;
maincharacter[2][1]=179;
maincharacter[2][2]=32;

 for (i=19;i<22;i++)
 for (j=0;j<3;j++)
 {  gotoxy(j+numpas, i);
    printf("%c", maincharacter[i-19][j]);
 }

 _sleep(200);
 for (i=19;i<22;i++)
 for (j=0;j<3;j++)
 {  gotoxy(numpas+3, i);
    printmap(i, j);
 }
 maincharacter[2][0]=47;
 maincharacter[2][1]=179;
 maincharacter[2][2]=32;
 for (i=19;i<22;i++)
 for (j=0;j<3;j++)
 {  gotoxy(j+numpas, i);
    printf("%c", maincharacter[i-19][j]);
 }

}

/ =====================================================/

if (charstate==3)
{ _sleep(200);
for (j=0;j<3;j++)
{ gotoxy(j+numpas, 21);
printmap(21, j);
}

 maincharacter[2][0]=47;
 maincharacter[2][1]=32;
 maincharacter[2][2]=92;

 for (i=18;i<21;i++)
 for (j=0;j<3;j++)
 {  gotoxy(j+numpas, i);
    printf("%c", maincharacter[i-18][j]);
 }

 _sleep(200);
 for (i=17;i<20;i++)
 for (j=0;j<3;j++)
 {  gotoxy(j+numpas, i);
    printf("%c", maincharacter[i-17][j]);
 }

 for (j=0;j<3;j++)
 {  gotoxy(j+numpas, 20);
    printmap(20, j);
 }

/ down/
_sleep(200);
for (i=18;i<21;i++)
for (j=0;j<3;j++)
{ gotoxy(j+numpas, i);
printf("%c", maincharacter[i-18][j]);
}

 for (j=0;j<3;j++)
 {  gotoxy(j+numpas, 17);
    printmap(17, j);
 }

 _sleep(200);
 maincharacter[2][0]=47;          
 maincharacter[2][1]=179;
 maincharacter[2][2]=32;
 for (i=19;i<22;i++)
 for (j=0;j<3;j++)
 {  gotoxy(j+numpas, i);
    printf("%c", maincharacter[i-19][j]);
 }

 for (j=0;j<3;j++)
 {  gotoxy(j+numpas, 18);
    printmap(18, j);
 }

}

if (charstate==4)
{ _sleep(200);

 for (i=0;i<3;i++)
 for (j=0;j<6;j++)
 {  gotoxy(j+numpas, i+18);
    printmap(i+18,j);
 }

 maincharacterdow[0][0]='>';
 maincharacterdow[0][1]='-';
 maincharacterdow[0][2]='>';
 maincharacterdow[0][3]='(';
 maincharacterdow[0][4]=32;
 maincharacterdow[0][5]=')';

 for (i=21;i<22;i++)
 for (j=0;j<6;j++)
 {  gotoxy(j+numpas, i);
    printf("%c", maincharacterdow[i-21][j]);
 }

 for (i=0;i<3;i++)
 for (j=0;j<6;j++)
 {  gotoxy(j+numpas, i+18);
    printmap(i+18, j);
 }

}
}

/=================================== NEW GAME =================================/
void newgame(int a)
{ maincharacter[0][0]=40;
maincharacter[0][1]=32;
maincharacter[0][2]=41;

  maincharacter[1][0]=47;
  maincharacter[1][1]=179;
  maincharacter[1][2]=92;

 maincharacter[2][0]=32;
 maincharacter[2][1]=179;
 maincharacter[2][2]=92;

 for (i=0;i<23;i++)
 for (j=0;j<81;j++)
 { 
    map[i][j]='o';
    gotoxy(j, i);
    printf("%c", map[i][j]);
 }

numpas=1;
charstate=0;

resumegame(1);
}

/================================== PRINT MAIN ================================/
void printmain(int a)
{ system("cls");
a=179;
b=220;
textcolor(15);
printf(" \n");
printf(" GAME NAME \n");
printf(" _ _%c%c \n", b, b);
printf(" +--%c_\------------------------+-%c-%c-----o%c _ \n", a, a, a, a);
printf(" %c-==========================\======\\\\\\\\HO) \n", a);
printf(" %c_ I N F I N I T Y \___\\\\\\\\/ \n", a);
printf(" %c___-__/\\~~-- \n", a);
printf(" %c\\_\\\\\\\\ %c(__==%c~~~~~(-- )--~~\n", a, a, a);
printf(" \ /~~~~\~~\ | \\_ /( \n");
printf(" %c%c %c--%c \ () \\\ \n", a, a, a, a);
printf(" %c\/ / ()\ \\\ \n", a);
printf(" `~~~~~~~~~-. \ \\ \ \n");
printf(" \ \ (SV) \\- \n");
printf(" \ \ \\ \n");
printf(" \ \ \\ \n");
printf(" \ \ \\ \n");
printf(" \ \ () \\ \n", a, a);
printf(" \_\__====~~~\ \n");
printf(" (__%c ", a);
printf(" ");
}

/================================== MAIN MENU =================================/
void mainmenu(int a)
{ printmain(1);

key='\0';
selecnum=1;

gotoxy(4,6);
printf("RESUME GAME");
gotoxy(4,8);
printf("NEW GAME");
gotoxy(4,10);
printf("LOAD GAME");
gotoxy(4,12);
printf("SAVE GAME");
gotoxy(4,14);
printf("SELECT PROFILE");
gotoxy(4,16);
printf("OPTIONS");
gotoxy(4,18);
printf("HELP");
gotoxy(4,20);
printf("SDK");
gotoxy(4,22);
printf("QUIT");

gotoxy(2,6);
printf("%c", selection);
while (readyquit!=1)
{ key='\0';

  key=getch();

  if (key==keyup)
  { selecclear=selecnum;
    if (selecnum==1) 
      selecnum=9;
    else
    if (selecnum!=1)
      selecnum=selecnum-1;
  }
  if (key==keydown)
  { selecclear=selecnum;
    if (selecnum==9)
      selecnum=1;
    else
    if (selecnum!=9)
      selecnum=selecnum+1;
  }
  if (key==keyuse)
  { switch (selecnum)
    { case 1:     
      resumegame(1);
           break;  
      case 2:
      newgame(1);
           break;
      case 3:
      loadgame(1);
           break;
      case 4:
      savegame(1);
           break;  
      case 5:
      selectprofile(1);
           break;
      case 6:
      options(1);
           break;
      case 7:
      help(1);
           break;
      case 8:
      sdk(1);
           break; 
      case 9:
      quit(1);
           break;
    }    
   }

  switch (selecclear)
  { case 1: 
    gotoxy(2,6);
    printf(" ");
          break;
    case 2: 
    gotoxy(2,8);
    printf(" ");
         break;
    case 3:
    gotoxy(2,10);
    printf(" ");
         break;
    case 4: 
    gotoxy(2,12);
    printf(" ");
          break;
    case 5:
    gotoxy(2,14);
    printf(" ");
          break;
    case 6:
    gotoxy(2,16);
    printf(" ");
          break;
    case 7:
    gotoxy(2,18);
    printf(" ");
          break;
    case 8:
    gotoxy(2,20);
    printf(" ");
          break;
    case 9:
    gotoxy(2,22);
    printf(" ");
          break;
  }

  switch (selecnum)
  { case 1: 
    gotoxy(2,6);
    printf("%c", selection);
          break;
    case 2: 
    gotoxy(2,8);
    printf("%c", selection);
         break;
    case 3:
    gotoxy(2,10);
    printf("%c", selection);
         break;
    case 4: 
    gotoxy(2,12);
    printf("%c", selection);
          break;
    case 5:
    gotoxy(2,14);
    printf("%c", selection);
          break;
    case 6:
    gotoxy(2,16);
    printf("%c", selection);
          break;
    case 7:
    gotoxy(2,18);
    printf("%c", selection);
          break;
    case 8:
    gotoxy(2,20);
    printf("%c", selection);
          break;
    case 9:
    gotoxy(2,22);
    printf("%c", selection);
          break;
  }

}
}

/================================== LOAD GAME =================================/
void loadgame(int a)
{a=2;
}

/================================== SAVE GAME =================================/
void savegame(int a)
{
}

/================================ SELECT PROFILE ==============================/
void selectprofile(int a)
{
}

/=================================== OPTIONS ==================================/
void options(int a)
{ printmain(1);
if (sound=1)
{ soundonoff[0]='O';
soundonoff[1]='F';
soundonoff[2]='F';
}
else
{ soundonoff[0]='O';
soundonoff[1]='N';
soundonoff[2]=32;
}
gotoxy(1,3);
printf(" OPTIONS ");
sound=0;
gotoxy(4,16);
printf("SET GAME KEYS");
gotoxy(4,20);
printf("BACK");
gotoxy(2,14);
printf("%c", selection);
selecnum=1;
while (readyquit!=1)
{ key='\0';

 gotoxy(4,14);
 printf("GAME SOUNDS ON/OFF     %s  %d", &soundonoff, sound);

 key=getch();

 if (key==keyup)
 { selecclear=selecnum;
   if (selecnum==1) 
      selecnum=3;
   else
   if (selecnum!=1)
      selecnum=selecnum-1;
 }
 if (key==keydown)
 { selecclear=selecnum;
   if (selecnum==3)
      selecnum=1;
   else
   if (selecnum!=3)
      selecnum=selecnum+1;
 }

 if (key==keyuse)
 { switch (selecnum)
   { case 1:     
     if (sound==1)
     { soundonoff[0]='O';
       soundonoff[1]='F';
       soundonoff[2]='F';
       sound=0;
     }
     else
     { soundonoff[0]='O';
       soundonoff[1]='N';
       soundonoff[2]=32;
       sound=1;
     }
          break;  
     case 2:
     setgamekeys(1);
          break;
     case 3:
     mainmenu(1);
          break;
   }
 }

 switch (selecclear)
 { case 1:
   gotoxy(2,14);
   printf(" ");
        break;
   case 2:
   gotoxy(2,16);
   printf(" ");
        break;
   case 3:
   gotoxy(2,20);
   printf(" ");
        break;
 }

 switch (selecnum)
 { case 1:
   gotoxy(2,14);
   printf("%c", selection);
        break;
   case 2:
   gotoxy(2,16);
   printf("%c", selection);
        break;
   case 3:
   gotoxy(2,20);
   printf("%c", selection);
        break;
 }

}
}

/===================================== HELP ===================================/
void help(int a)
{
}

/===================================== SDK ====================================/
void sdk(int a)
{ system("cls");
gotoxy(1,3);
printf(" SDK \n\n");
printf("The SDK is your way to make some easy changes in this game, here you can access \n");
printf("some tools, the map editor and the ASCII list. \n\n");
printf("Just select the tool you want to use bellow:");
gotoxy(4,14);
printf("ASCII LIST");
gotoxy(4,16);
printf("MAP EDITOR");
gotoxy(4,20);
printf("BACK");
gotoxy(2,14);
printf("%c", selection);
selecnum=1;
while (readyquit!=1)
{ key='\0';
key=getch();

 if (key==keyup)
 { selecclear=selecnum;
   if (selecnum==1) 
      selecnum=3;
   else
   if (selecnum!=1)
      selecnum=selecnum-1;
 }
 if (key==keydown)
 { selecclear=selecnum;
   if (selecnum==3)
      selecnum=1;
   else
   if (selecnum!=3)
      selecnum=selecnum+1;
 }

 if (key==keyuse)
 { switch (selecnum)
   { case 1:     
     asciilist(1);
          break;  
     case 2:
     mapeditor(1);
          break;
     case 3:
     mainmenu(1);
          break;
   }
 }

 switch (selecclear)
 { case 1:
   gotoxy(2,14);
   printf(" ");
        break;
   case 2:
   gotoxy(2,16);
   printf(" ");
        break;
   case 3:
   gotoxy(2,20);
   printf(" ");
        break;
 }

 switch (selecnum)
 { case 1:
   gotoxy(2,14);
   printf("%c", selection);
        break;
   case 2:
   gotoxy(2,16);
   printf("%c", selection);
        break;
   case 3:
   gotoxy(2,20);
   printf("%c", selection);
        break;
 }
}

}

/===================================== QUIT ===================================/
void quit(int a)
{
printmain(1);
gotoxy(4,13);
printf("DO YOU REALLY WANT TO QUIT?");
gotoxy(4,16);
printf("YES");
gotoxy(4,18);
printf("NO");
gotoxy(2,16);
printf("%c", selection);
selecnum=1;

while (readyquit!=1)
{ key='\0';
key=getch();

 if (key==keyup)
 { selecclear=selecnum;
   if (selecnum==1) 
      selecnum=2;
   else
   if (selecnum!=1)
      selecnum=selecnum-1;
 }
 if (key==keydown)
 { selecclear=selecnum;
   if (selecnum==2)
      selecnum=1;
   else
   if (selecnum!=2)
      selecnum=selecnum+1;
 }

 if (key==keyuse)
 { switch (selecnum)
   { case 1:     
     exit(1);
          break;  
     case 2:
     mainmenu(1);
          break;
   }
 }

 switch (selecclear)
 { case 1:
   gotoxy(2,16);
   printf(" ");
        break;
   case 2:
   gotoxy(2,18);
   printf(" ");
        break;
 }

 switch (selecnum)
 { case 1:
   gotoxy(2,16);
   printf("%c", selection);
        break;
   case 2:
   gotoxy(2,18);
   printf("%c", selection);
        break;
 }
}

}

/================================== ASCII LIST ================================/
void asciilist(int)
{ system("cls");
gotoxy(1,3);
printf("The ASCII list will show you the 256 ASCII charactrers and its correspondent \n");
printf("nunbers in decimal. Its very useful for manual edit this game. \n\n");
printf("PRESS ANY KEY TO CONTINUE");
getch();
system("cls");
char c, chartest[3][11];
int i, j;
for (i=0; i<149; i++)
{ c=i;
printf("%c (%d) \n\n", c, i);
}
getch();
for (i=148; i<257; i++)
{ c=i;
printf("%c (%d) \n\n", c, i);
}
getch();
sdk(1);
}

/================================= INITMAPEDITOR ==============================/
void initmapeditor(int)
{ int x, y;
system("cls");
gotoxy(1,3);
printf("The MAP EDITOR will help you edit your own maps. Use your movement keys to\n");
printf("change positions of the map, press use key to change that position, then\n");
printf("write the decimal value of a ASCII char press enter and write the nunber of a\n");
printf("color for this char. Press pause button to stop working and open the menu where\n");
printf("you can save your work. \n");
centralize(9, "Take in mink you need to setup the first char you select twice.");
centralize(12,"PRESS ANY KEY TO START MAP EDITOR");
getch();
system("cls");
mapopen=1;
for (i=0;i<22;i++)
for (j=0;j<80;j++)
{ maplab[i][j].color=15;
maplab[i][j].mappoint='0';
textcolor(maplab[i][j].color);
gotoxy(j+1,i+3);
printf("%c", maplab[i][j].mappoint);
}
x=1;
y=1;
while (key!=keypause)
{ key='\0';
gotoxy(70,1);
printf(" ");
gotoxy(70,1);
printf("%d", x);
gotoxy(75,1);
printf(" ");
gotoxy(75,1);
printf("%d", y);

key=getch();

if (key==keypause)
mapeditor(1);

if (key==keyup)
{ if (x==1)
    x=22;
  else
  if (x!=1)
    x-=1;
}
if (key==keydown)
{ if (x==22)
    x=1;
  else
  if (x!=22)
    x+=1;
}
if (key==keyright)
{ if (y==80)
    y=1;
  else
  if (y!=80)
    y+=1;
}
if (key==keyleft)
{ if (y==1)
    y=80;
  else
  if (y!=1)
    y-=1;
}

gotoxy(70,1);
printf("  ");
gotoxy(70,1);
printf("%d", x);
gotoxy(75,1);
printf("  ");
gotoxy(75,1);
printf("%d", y);

if (key==keyuse)
{ gotoxy(1,1);
  textcolor(15);
  printf("WRITE THE NEW CHAR: ");
  scanf("%c", &maplab[x-1][y-1].mappoint);
  scanf("%c", &maplab[x-1][y-1].mappoint);
  gotoxy(1,1);
  printf("                            ");
  gotoxy(1,1);
  printf("WRITE THE NEW COLOR: ");
  scanf("%d", &maplab[x-1][y-1].color);
  gotoxy(1,1);
  printf("                            ");      
  buildmap(0);
}

}
}

/================================= SET GAME KEYS ==============================/
void setgamekeys(int)
{ system("cls");
centralize(2, "SET KEYS");
centralize(4, "Select the key you want to change and press the new key.");
centralize(6, "USE ONLY NUNBERS AND LETERS.");
gotoxy(4,24);
printf("BACK");
gotoxy(2,10);
printf("%c", selection);
selecnum=1;
while (readyquit!=1)
{ gotoxy(4,10);
printf("UP KEY '%c'", keyup);
gotoxy(4,12);
printf("DOWN KEY '%c'", keydown);
gotoxy(4,14);
printf("RIGHT KEY '%c'", keyright);
gotoxy(4,16);
printf("LEFT KEY '%c'", keyleft);
gotoxy(4,18);
printf("PAUSE KEY '%c'", keypause);
gotoxy(4,20);
printf("USE KEY '%c'", keyuse);

 key='\0';
 key=getch();

 if (key==keyup)
 { selecclear=selecnum;
   if (selecnum==1) 
      selecnum=7;
   else
   if (selecnum!=1)
      selecnum=selecnum-1;
 }
 if (key==keydown)
 { selecclear=selecnum;
   if (selecnum==7)
      selecnum=1;
   else
   if (selecnum!=7)
      selecnum=selecnum+1;
 }

 if (key==keyuse)
 { switch (selecnum)
   { case 1:
     gotoxy(25,14);
     printf("Press the new key for UP KEY:");
     currentkey=getch();
     while (currentkey==keydown or currentkey==keyright or currentkey==keyleft or currentkey==keypause or currentkey==keyuse)
     { gotoxy(25,14);
       printf("Key already in use. Press the new key for UP KEY:");
       currentkey=getch();
     }
     gotoxy(25,14);
     printf("                                                                      ");
     keyup=currentkey;     
          break;

     case 2:
     gotoxy(25,14);
     printf("Press the new key for DOWN KEY:");
     currentkey=getch();
     while (currentkey==keyup or currentkey==keyright or currentkey==keyleft or currentkey==keypause or currentkey==keyuse)
     { gotoxy(25,14);
       printf("Key already in use. Press the new key for DOWN KEY:");
       currentkey=getch();
     }
     gotoxy(25,14);
     printf("                                                                      ");
     keydown=currentkey;
          break;

     case 3:
     gotoxy(25,14);
     printf("Press the new key for RIGHT KEY:");
     currentkey=getch();
     while (currentkey==keyup or currentkey==keydown or currentkey==keyleft or currentkey==keypause or currentkey==keyuse)
     { gotoxy(25,14);
       printf("Key already in use. Press the new key for RIGHT KEY:");
       currentkey=getch();
     }
     gotoxy(25,14);
     printf("                                                                      ");
     keyright=currentkey;
          break;

     case 4:
     gotoxy(25,14);
     printf("Press the new key for LEFT KEY:");
     currentkey=getch();
     while (currentkey==keyup or currentkey==keydown or currentkey==keyright or currentkey==keypause or currentkey==keyuse)
     { gotoxy(25,14);
       printf("Key already in use. Press the new key for LEFT KEY:");
       currentkey=getch();
     }
     gotoxy(25,14);
     printf("                                                                      ");
     keyleft=currentkey;
          break;

     case 5:
     gotoxy(25,14);
     printf("Press the new key for PAUSE KEY:");
     currentkey=getch();
     while (currentkey==keyup or currentkey==keydown or currentkey==keyleft or currentkey==keyright or currentkey==keyuse)
     { gotoxy(25,14);
       printf("Key already in use. Press the new key for PAUSE KEY:");
       currentkey=getch();
     }
     gotoxy(25,14);
     printf("                                                                      ");
     keypause=currentkey;
          break;

     case 6:
     gotoxy(25,14);
     printf("Press the new key for USE KEY:");
     currentkey=getch();
     while (currentkey==keyup or currentkey==keydown or currentkey==keyleft or currentkey==keyright or currentkey==keypause)
     { gotoxy(25,14);
       printf("Key already in use. Press the new key for USE KEY:");
       currentkey=getch();
     }
     gotoxy(25,14);
     printf("                                                                      ");
     keyuse=currentkey;
          break;

     case 7:
     options(1);
          break;
   }
 }

 switch (selecclear)
 { case 1:
   gotoxy(2,10);
   printf(" ");
        break;
   case 2:
   gotoxy(2,12);
   printf(" ");
        break;
   case 3:
   gotoxy(2,14);
   printf(" ");
        break;
   case 4:
   gotoxy(2,16);
   printf(" ");
        break;
   case 5:
   gotoxy(2,18);
   printf(" ");
        break;
   case 6:
   gotoxy(2,20);
   printf(" ");
        break;
   case 7:
   gotoxy(2,24);
   printf(" ");
        break;
 }

 switch (selecnum)
 { case 1:
   gotoxy(2,10);
   printf("%c", selection);
        break;
   case 2:
   gotoxy(2,12);
   printf("%c", selection);
        break;
   case 3:
   gotoxy(2,14);
   printf("%c", selection);
        break;
   case 4:
   gotoxy(2,16);
   printf("%c", selection);
        break;
   case 5:
   gotoxy(2,18);
   printf("%c", selection);
        break;
   case 6:
   gotoxy(2,20);
   printf("%c", selection);
        break;
   case 7:
   gotoxy(2,24);
   printf("%c", selection);
        break;
 }
}

}

/================================== CENTRALIZE ================================/
void centralize(int pos, char frase[80])
{ position=((40-(strlen(frase))/2));
gotoxy(position, pos);
printf("%s", frase);
}

void intro(int)
{ maincharacter[0][0]=40;
maincharacter[0][1]=32;
maincharacter[0][2]=41;

  maincharacter[1][0]=47;
  maincharacter[1][1]=179;
  maincharacter[1][2]=92;

 maincharacter[2][0]=32;
 maincharacter[2][1]=179;
 maincharacter[2][2]=92;

 for (i=0;i<23;i++)
 for (j=0;j<81;j++)
 { 
    map[i][j]='o';
    gotoxy(j, i);
    printf("%c", map[i][j]);
 }

for (numpas=1; numpas<20; numpas++)
{ resumegame(1);
}
}

/=================================== BUILD MAP ================================/
void buildmap(int number)
{ mapnunber=0;
if (number==0)
{ for (i=0;i<22;i++)
for (j=0;j<80;j++)
{ textcolor(maplab[i][j].color);
gotoxy(j+1,i+3);
printf("%c", maplab[i][j].mappoint);
}
}
}

/=================================== PRINT MAP ================================/
void printmap(int y, int x)
{ textcolor(maplab[y][x].color);
printf("%c", maplab[y][x].mappoint);
}

void mapeditor(int)
{ system("cls");
gotoxy(4,14);
printf("START NEW MAP");
gotoxy(4,16);
printf("SAVE MAP");
gotoxy(4,18);
printf("LOAD MAP");
gotoxy(4,22);
printf("BACK");
gotoxy(2,14);
printf("%c", selection);
selecnum=1;

while (readyquit!=1)
{ key='\0';
key=getch();

 if (key==keyup)
 { selecclear=selecnum;
   if (selecnum==1) 
      selecnum=4;
   else
   if (selecnum!=1)
      selecnum=selecnum-1;
 }
 if (key==keydown)
 { selecclear=selecnum;
   if (selecnum==4)
      selecnum=1;
   else
   if (selecnum!=4)
      selecnum=selecnum+1;
 }

 if (key==keyuse)
 { switch (selecnum)
   { case 1:     
     initmapeditor(1);
          break;  
     case 2:
     savemap(1);
          break;
     case 3:
     loadmap(1);
          break;
     case 4:
     sdk(1);
          break;
   }
 }

 switch (selecclear)
 { case 1:
   gotoxy(2,14);
   printf(" ");
        break;
   case 2:
   gotoxy(2,16);
   printf(" ");
        break;
   case 3:
   gotoxy(2,18);
   printf(" ");
        break;
   case 4:
   gotoxy(2,22);
   printf(" ");
        break;
 }

 switch (selecnum)
 { case 1:
   gotoxy(2,14);
   printf("%c", selection);
        break;
   case 2:
   gotoxy(2,16);
   printf("%c", selection);
        break;
   case 3:
   gotoxy(2,18);
   printf("%c", selection);
        break;
   case 4:
   gotoxy(2,22);
   printf("%c", selection);
        break;
 }
}

}

/=================================== LOAD MAP =================================/
void loadmap(int)
{
}

/=================================== SAVE MAP =================================/
void savemap(int)
{ if (mapopen==0)
{ centralize(10, "THERE'S NO MAP OPEN TO SAVE");
centralize(12, "PRESS ANY KEY TO RETURN");
getch();
centralize(10, " ");
centralize(12, " ");
}
else
{ system("cls");
centralize(10, "WRITE THE NAME OF YOUR MAP");
centralize(11, "REMENBER TO USE ONLY NUNBERS AND LETERS\n\n");
gets(novoa.mapname);
allocatemap(1);
system("cls");
centralize(10, "FILE SAVED SUCESSFULLY");
centralize(12, "PRESS ANY KEY TO CONTINUE");
getch();
mapeditor(1);
}
}

/================================= ALLOCATE MAP ===============================/
void allocatemap(int)
{ nnew=(maps *)malloc(sizeof(maps));
if (nnew == NULL)
{ printf("\n Insulficient memory");
exit(1);
}
if (first== NULL)
{ first=last=nnew;
nnew->mapnumber=1;
nnew->next= NULL;
}
else
{ nnew->next= NULL;
last->next=nnew;
last=nnew;
nnew->mapnumber=first->mapnumber+1;
}

strcpy((nnew->mapname), novoa.mapname);
for (i=0; i<22; i++)
for (j=0; j<80; j++)
{ nnew->maplab[i][j].mappoint = maplab[i][j].mappoint;
nnew->maplab[i][j].color= maplab[i][j].color;
textcolor(nnew->maplab[i][j].color);
gotoxy(j+1,i+3);
printf("%c", nnew->maplab[i][j].mappoint);
}
system("cls");
arcmap= fopen("gamemaps.gfl", "a+");
fwrite(&nnew, sizeof(mapslist),1,arcmap);
fseek(arcmap, 0,SEEK_SET);
fread(&nnew, sizeof(mapslist),1,arcmap);
for (i=0; i<22; i++)
for (j=0; j<80; j++)
{
printf("%c", &nnew->maplab[i][j].mappoint);
} fread(&nnew, sizeof(mapslist),1,arcmap);
fclose(arcmap);
getchar();
}

[Osito]

In this part:

for (i=0; i<22; i++)
for (j=0; j<80; j++)
{ fread(&first, sizeof(mapslist),1,arcmap);
printf("%c", &first->maplab[i][j].mappoint)
;
}

I don't understand why you're doing fread each time through the loop. It seems like you're reading a whole mapslist each time but then printing one point.

[Anonymous]

If I put this fread the program show me a more near to the map I crated if I don't put it there, but both, if I pu or not it don't show the map corectly.

[Anonymous]

And if I remove all the & in the end of file, the program only show me ´ ´. But it must show my map that is a lot of zeros.