EXIT_SUCCESS(3const) EXIT_SUCCESS(3const)

EXIT_SUCCESS, EXIT_FAILURE - termination status constants

Standard C library (libc)

#include <stdlib.h>
#define EXIT_SUCCESS  0
#define EXIT_FAILURE  /* nonzero */

EXIT_SUCCESS and EXIT_FAILURE represent a successful and unsuccessful exit status respectively, and can be used as arguments to the exit(3) function.

C99 and later; POSIX.1-2001 and later.

#include <stdio.h>
#include <stdlib.h>
int
main(int argc, char *argv[])
{
    FILE *fp;
    if (argc != 2) {
        fprintf(stderr, "Usage: %s <file>\n", argv[0]);
        exit(EXIT_FAILURE);
    }
    fp = fopen(argv[1], "r");
    if (fp == NULL) {
        perror(argv[1]);
        exit(EXIT_FAILURE);
    }
    /* Other code omitted */
    fclose(fp);
    exit(EXIT_SUCCESS);
}

exit(3), sysexits.h(3head)

2023-10-31 Linux man-pages 6.7