/*************************************************************************
	> File Name : fork_num.c
	> Author : TL Song
	> EMail : songtianlun@frytea.com
	> Created Time : Wed 23 Dec 2020 03:52:27 PM CST
 ************************************************************************/

#include <stdio.h>
int main()
{
    fork();
    fork() && fork() || fork();
    fork();
    while(1);
    return 0;
}