Is it possible to call atexit() function more than once in a C program?

C-Language - Interview Questions

Yes. We can call atexit() function more than once. But, they will be executed in reverse order as a stack.

Example Program :

#include <stdio.h> 
#include <stdlib.h>
 
void Exit1 (void)
{
   printf ("Exit1 function is called\n");
}
void Exit2 (void)
{
   printf ("Exit2 function is called \n");
}
 
int main (void)
{
   atexit (Exit1);
   atexit (Exit2);
   printf ("This is the end of this program.\n");
   return 0;
}

Output :

This is the end of this program.

Exit2 function is called

Exit1 function is called