CMFA/module_01.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/stat.h>

#define BOLD_GRAY "\033[1;90m"
#define RED "\033[0;31m"
#define WHITE "\033[0;37m"
#define RESET "\033[0m"

int module_01_run(const char *filename) {
    char log_msg[1024];

    struct stat st;
    if (stat(filename, &st) != 0) {
        snprintf(log_msg, sizeof(log_msg), BOLD_GRAY " Main: " RED "Cannot stat file: %s" RESET, strerror(errno));
        printf("%s\n", log_msg);
        return 1;
    }

    int is_regular = S_ISREG(st.st_mode);
    snprintf(log_msg, sizeof(log_msg), BOLD_GRAY " Main: " WHITE "File is %s" RESET, is_regular ? "regular file" : "not a regular file");
    printf("%s\n", log_msg);
    return 0;
}