Get the absolute path of given files

apof.c

#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <unistd.h>

/*
 * Darwin 16.6.0 Darwin Kernel Version 16.6.0 
 * $ make apof
 * author: Clément Boin
 */

int main(int argc, char **argv)
{
    if (argc < 2) {
        fprintf(stderr, "usage: %s FILE[..]\n", argv[0]);
        return EXIT_FAILURE;
    }

    char *cwd = (char *) malloc(sizeof(char) * PATH_MAX);
    if (cwd == NULL) {
        perror("cwd: malloc failed");
        return EXIT_FAILURE;
    }

    size_t i;
    for (i = 1; i < argc; ++i) {
        if (getcwd(cwd, (sizeof(char) * PATH_MAX)) != NULL) {
            printf("%s/%s\n", cwd, argv[i]);
        } else {
            perror("getcwd failed");
            return EXIT_FAILURE;
        }
    }

    return EXIT_SUCCESS;
}