C Tutorial/stdlib.h/exit
exit
Item Value Header file stdlib.h Declaration void exit(int exit_code); Function causes immediate, normal termination of a program.
Termination functions registered by atexit() are called, and any open files are flushed and closed.
- The value of exit_code is passed to the calling process.
- If the value of exit_code is zero, or EXIT_SUCCESS, normal program termination is assumed.
- A nonzero value, or EXIT_FAILURE, is used to indicate an implementation-defined error.
#include <stdlib.h>
#include <stdio.h>
int main(void)
{
char choice;
do {
printf("Enter names (E)\n");
printf("Delete name (D)\n");
printf("Print (P)\n");
printf("Quit (Q)\n");
choice = getchar();
} while(!strchr("EDPQ", toupper(choice)));
if(choice=="Q") exit(0);
return choice;
}