[Dev-C++] A bit stumped on binary files

[Ewald H. <in...@ho...>]

Hi,

I use the attached code to output a struct to a binary file. Outputting =
character arrays is no problem, but how do I output an integer value in =
bytes and not a string value ? I will be using the Win32 platform, =
32-bit integer, so portability is no issue. Is there an easy way to do =
it that would simply output the required 4 bytes ? My current test =
solution converts a number to a 10 digit string, padded with 0's like =
this : 10 would be 0000000010, but it is clumsy!

Regards
Ewald Horn
Proprietor/Eienaar : Horn Labs
Cell/Sel : 083 519 1615
Website : http://www.hornlabs.co.za
Email/E-pos : in...@ho...


//[code]

#include <fstream>
#include <string.h>

using namespace std;

struct MyStruct
{
  char name[40];
  char surname[40];
  int age;
}; =20

// global
ofstream myFile("tmp.out",ios::out | ios::binary);

void writeStruct(MyStruct);

int main()
{
  MyStruct data[3] =3D {0};
 =20
  for (int i =3D 0; i < 3; i++)
    writeStruct(data[i]);
 =20
  myFile.close();
 =20
  return 0;
} =20


void writeStruct(MyStruct strc)
{
  for (int i =3D 0; i < sizeof(strc.name); i++)
    myFile.put(strc.name[i]);

  for (int i =3D 0; i < sizeof(strc.surname); i++)
    myFile.put(strc.surname[i]);

// problem area follows   =20
  myFile << strc.age;
} =20
//[end code]