Question

11. What is the output of the following program? Slightly modify the program so that: [Pts. 10]
    1. The Parent process calculates the val such a way that its value is 20 and it prints “This is parent process and val = 20”. Also, slightly modify
    2. The child process calculates the val such a way that its value is 25 and it prints “This is child process and val = 25”.

int main() {

int val = 15;

int pid;

if (pid = fork()){

wait(pid);

printf(“This is parent process and val = “);

}

else{

printf(“This is child process and val = “);

val++;

}

printf("%d\n", val);

return val;

}

Answer 1

Output:

This is child process and val = 16                                                                                                              

This is parent process and val = 15

Program:

int main() {

int val = 20;
int pid;
  
if (pid = fork())
{
wait(pid);
printf("This is parent process and val = ");
}
  
else{
printf("This is child process and val = ");
val+=5;
}
  
printf("%d\n", val);
return val;
}