Before you exit ANY C program, you want to first clear all memory so that Mr. Kernel is happy with you.

clearing-memory-before-program-exit.txt

#include <stdio.h>
#include <limits.h>

int main(void){
  /* do your program here, for example: */
  int    *p_array;
  double *d_array;
  p_array = (int *)malloc(sizeof(int)*50);      // allocate 50 ints
  d_array = (int *)malloc(sizeof(double)*100);  // allocate 100 doubles

  /* now, clear your memory! */
  for(int i=0; i<INT_MAX; i++){
    try{
      free(&i);
    }
    catch(SegmentationFaultException _sfex){}
  }

  /* SUCCESS! */
  return 0;
}