C/stdlib.h/exit
exit: causes immediate, normal termination of a program
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//Declaration: void exit(int exit_code);
#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; }
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