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/** System Programming (7) : exit(2), atexit(3) **/

#include <stdio.h>

#include <stdlib.h>

void cleanup1(void)

{

printf("cleanup 1 is called \n");

}

void cleanup2(void)

{

printf("cleanup 2 is called \n");

}

int main(void)

{

atexit(cleanup1); // atexit(3)

atexit(cleanup2);

exit(0); // exit(2)

}