Question

Please I need help with this problem

Write a c++ program that will accept the names of 3 processes as command-line arguments. Each of these processes will run for as many seconds as (PID%10)*3+5 and terminate. After those 3 children terminated, the parent process will reschedule each child. When all children have been rescheduled 3 times, the parent will terminate. Each child must print out its process id every time it runs.

Answer 1

// Name of program Process.cpp

#include <iostream>
#include <signal.h>
#include <unistd.h>

using namespace std;

int main(int argc, char *argv[]){
pid_t pid;
int rs;
int parentId;
   if(argc==3){
   for (int i = 0; i < 3; i++) {
   parentId = getpid();
       for (int j = 0; j < argc; j++) {
   std::cout<<"The child process name " << argv[j];
pid = fork();
if (pid == 0) { //child process
rs = execl("echo", argv[j]);
std::cout<<"The child process Id is "<<pid;
alarm((parentId%10)*3+5);
kill(pid,0);
}        
   }
   }
   }
   else std::cout<<"Pleaes enter the correct number of arguments ";
   return 0;
}