How to list first level directories only in C?

Question

In a terminal I can call ls -d */. Now I want a c program to do that for me, like this:

#include 
#include          


        

Answer 1

Another less low-level approach, with system():

#include 

int main(void)
{
    system("/bin/ls -d */");
    return 0;
}

Notice with system(), you don't need to fork(). However, I recall that we should avoid using system() when possible!

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As Nomimal Animal said, this will fail when the number of subdirectories is too big! See his answer for more...