Tengo este código que se supone crea tres procesos secundarios 'y cada uno realizará una pequeña operación matemática. Luego, se supone que el padre usa los resultados de todo el proceso del niño y obtiene una respuesta final, pero no puedo encontrar una manera de leer realmente el resultado del niño del padre. ¿Hay alguna forma de hacer esto?

#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>

int main(void)
{
   int pid1, pid2, pid3, status;
   int a=1, b=2, c=5, d=4, e=6, f=3, g;
   int t1, t2, t3;

   printf("Hello World!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n");
   printf("Here I am  before use of forking\n");
   printf("I am the PARENT process and pid is : %d\n",getpid());

   pid1 = fork( );
   if (pid1 == 0)
   {      
    printf("\n\nHere I am just after child forking1\n");
    printf("I am the Child process and pid1 is :%d\n",getpid());      
    printf("My parent's pid is :%d\n",getppid());   
    t1 = a+b;
    printf("The answer for t1 is: %d\n", t1);       
    exit(0);
   }
   else
   {
    wait(&status);
        printf("\nHere I am just after parent forking1\n");
        printf("I am the Parent process and pid is: %d\n",getpid());
   }

   pid2 = fork( );
   if (pid2 == 0)
   {      
    printf("\n\nHere I am just after child forking2\n");
    printf("I am the Child process and pid2 is :%d\n",getpid());      
    printf("My parent's pid is :%d\n",getppid());   
    t2 = c+d;
    printf("The answer for t2 is: %d\n", t2);   
    exit(0);    
   }
   else
   {
    wait(&status);
        printf("\nHere I am just after parent forking2\n");
        printf("I am the Parent process and pid is: %d\n",getpid());
   }

   pid3 = fork( );
   if (pid3 == 0)
   {      
    printf("\n\nHere I am just after child forking3\n");
    printf("I am the Child process and pid3 is :%d\n",getpid());      
    printf("My parent's pid is :%d\n",getppid());   
    t3 = e/f;   
    printf("The answer for t3 is: %d\n", t3);   
    exit(0);
   }
   else
   {
    wait(&status);
        printf("\nHere I am just after parent forkingALL\n");
        printf("I am the Parent process and pid is: %d\n",getpid());
   }


   printf("\n\nThe final answer for t1 is: %d\n", t1);
   printf("The final answer for t2 is: %d\n", t2);
   printf("The final answer for t3 is: %d\n", t3);


   g = t1*t2-t3;
   printf("The final answer for g is: %d\n", g);
}