Creating zombie Process in C

Question

I am trying to create a zombie process in C do the following:

1 - creating child process

2 - let the parent wait/sleep for 60s

3 - child process ends after creating it immediately.

And i want to show details in console about the process and its usage of CPU for example.

i wrote the following code but i see nothing running in console with this command ps -l

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

int main()
{

    int pid = fork();

    // Parent process
    if (pid > 0)
        sleep(60);

    // Child process
    else {
        exit(0);
    }

    return 0;
}