Child Process in Windows Lab1

child.c

#include<stdio.h>
#include<Windows.h>

int main(int argc, char* argv[]) 
{
  //we'll execute this child process with one argument from parent process,
  //so we are checking if the number of arguments is right. 
  //If you wanna give more arguments, check according to this.
  //argc is the number of arguments + 1(process that is executed) 
  // ex: child.exe 1 => argc=2 , calculator.exe "what's up?" "hey" "yov" 4 => argc=5 
  if(argc!=2) 
  {
    printf("error in child process");
    system("pause");
    exit(0);
  }
  //if everything goes right, then let's print the argument given to this child.
  //argv[0] is the name of process(child.exe in this case), argv[1] is first arg, argv[2] is second 
  //and it goes on as you wish.

  printf("message from parent: %s \n", argv[1]);

  return 1;
}