#include <sys/types.h>
#include <sys/wait.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <cstring>
#include <iostream>
int main(int argc, char *argv[])
{
    std::cout<<"This is the child process." <<" My pid is "<<getpid()<<" and my parent's id is "<<getppid()<<std::endl;
    for (int i = 0; i <argc; ++i) {
        std::cout<<argv[i]<<std::endl;
        sleep(2);
    }
    return 51;
}