#include <stdio.h>
#include <unistd.h>
 
int main()
{
 
int pid;
float a, b, c;
 
pid = fork();
 
if (pid == 0) 
a=1+1;
 
else wait();
b=2+2;
 
c=a+b;
printf("c=%f\n", c);
 
return 0;
 
}