Simple unix ls programming in C

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C

Linux

#include <sys/types.h>
    #include <dirent.h>
    #include <stdio.h>
    #include <stdlib.h>

    int main(int argc, char** argv)
        DIR* dp;
        struct dirent* dentry;

        if(argc != 2) {
            printf("usage: my_ls dirname\n");
            exit(1);
        }

        if(! (dp=opendir(argv[1])) ) {
            printf("opendir error\n");
            exit(2);
        }
    
        while(1) {
            dentry=readdir(dp);
            if(!dentry)
                break;

            printf("%s\n", dentry->d_name);
        }
        return 0;
    }

I'm trying to make this ls program's output
doesn't show . or ..
and ls -l output shows
- in this order : directory(d)/file(-)/simbolic link(l)
- permission (rwxrwxrwx)
- the size of the file

and can't find a clue how to make it so.


//The simpler the better!! Thank you

What I have tried:

tried using st_mode but can't find a way to put it properly