Question

I am new to C and writing a simple program to display the byte representation of data. When I compile, the Command Prompt screen flashes for 1/2 a second and disappears. In simpler words, the output doesn’t show up. Following is my code:

#include <stdio.h>
typdef unsigned char* pointer;

void show_int(int);
void show_bytes(pointer, int);
int main()
{
show_int(100);
}

void show_int(int x)
{
show_bytes((ponter) &x, sizeof(int));
}

void show_bytes(pointer start, int len)
{ 
  int i;
  for(i=0;i<len;i++)
  {
    printf("0x%p\t0x%.2x\n", start + i, start[i]);
  }
}

Answer 1

The program likely is displaying your output, then quickly exiting. You’ll want to delay before exiting. If you’re on Windows, use Sleep(milliseconds); if you’re on Unix, use sleep(seconds). Note not only the different units, but the different capitalization.