Question

Write a program that creates four processes. The original process creates two children processes and then prints out “parent”. The children processes print “child1” and “child2”, respectively. The first child process creates a child process that prints out “grandchild”. write a program that creates four processes. The original process creates two children processes and then prints out “parent”. The children processes print “child1” and “child2”, respectively. The first child process creates a child process that prints out “grandchild”. The output must be guaranteed to print out in the following order.

grandchild

child1

child2

parent

Answer 1

#include<stdio.h>

#include<unistd.h>

int main()

{

int c1=fork();

int c2=fork();

if(c1>0&&c2>0){

printf("parent");

}

else if (c1==0&&c2>0)

{

printf("Frist child");

}

else if (c1>0&&c2==0)

{printf("Second child");

}

else{

printf("Grand Child");

}

return();

}

goo version 4.6.3

parent

First child

Second child

Grand child