To get file info

#include <stdio.h>
#include <sys/stat.h>

int main() {
    struct stat fileStat;
    if(stat("example.txt",&fileStat) == 0) {
        printf("File Size: %ld bytes\n",fileStat.st_size);
        printf("Number of Blocks: %ld\n",fileStat.st_blocks);
        printf("File Permissions: %o\n",fileStat.st_mode);
    }
    return 0;
}