[Dev-C++] Can't run a simple program

[Ecpin <ec...@ne...>]

Hi,

After many years I returned to C and used Bloodshed Dev-C++ IDE v4 to
code a simple routine (as MS-DOS/console application) that should print
a text file.

But, even though the code looks correct and compiles succesfully, when I
run the program, windows displays the following error msg and the
program terminates.

**- error msg:

   PrintMe.exe - Application Error

   The instruction at "0x78024222" referenced memory at "0x0000000c".
   The memory could not be "read".

   Click on OK to terminate the program
   Click on CANCEL to debug the program

   <OK BUTTON>  <CANCEL BUTTON>

**- end of error msg


The code I wrote is reproduced below:-

**- code begins:

#include <stdio.h>
#include <stdlib.h>

int main(int argc, char *argv[])
{
   char str[80];
   FILE *fp, *stdprn;

   if ((fp = fopen(argv[1], "r")) == NULL)
   {
     if ((stdprn = fopen("PRN", "w")) == NULL)
     while(!feof(fp)) {             // error occurs here,
            fgets(str, 79, fp);     // or here
            fprintf(stdprn, "%s", &str);
     }
   }
   fclose(fp);
   fclose(stdprn);
   return 0;
}

**- code ends

Pls advice what could be wrong


Rgds
R3