Question

I am writing a code to traverse through the directory using depth first algorithm. The problem is the program is not displaying anything and gives Segmentation Fault error. I tried to debug it but it was worthless as I am still learning stuff. So now I need the help of experts. Here is the code:

void func(char path[]);

int main(int argc, char *argv) {
    char buf[255];

    scanf("%s",buf);
    func(buf);
    return 0;
}

void func(char path[]) {
    DIR *dirp;
    struct stat states;
    struct dirent *direntp;
    printf("Inside\n");
    dirp=opendir(path);
    stat(path, &states);

    while ((direntp=readdir(dirp)) != NULL) {
        if (S_ISDIR(states.st_mode)) {
            printf("Calling Func\n");
            func(direntp->d_name);
            chdir("..");
        } else if (!S_ISDIR(states.st_mode)) {
            printf("  %s\n", direntp->d_name);
        } else if (!strcmp(direntp->d_name, ".") || !strcmp(direntp->d_name, "..")) {
            continue;
        }
    }
    return ;
}

Answer 1

Inside func, in front of the while, put that:

dirp=opendir (path);
if (!dirp)
  return;

and, btw, its int main (int argc, char *argv[])