EXIT_SUCCESS(3const)

NAME

EXIT_SUCCESS, EXIT_FAILURE - termination status constants

LIBRARY

Standard C library (libc)

SYNOPSIS

#include <stdlib.h>

#define EXIT_SUCCESS  0
#define EXIT_FAILURE  /* nonzero */

DESCRIPTION

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

STANDARDS

C11, POSIX.1-2008.

HISTORY

C89, POSIX.1-2001.

EXAMPLES

#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);
}