how to change file permissions in C language
#include <stdio.h>
#include <sys/stat.h>
int main() {
char *filename = "example.txt";
int result = chmod(filename, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
if (result == 0) {
printf("File permissions changed successfully.\n");
} else {
printf("Error changing file permissions.\n");
}
return 0;
}