Problem 5.1: Following program demonstrates the use of fork ( ) more than one time. Write this program in Oracle VM VirtualBox, compile it and run it according to lab instructor instructions and study the output. Put the screenshot of code after writing in vi editor in solution section and screenshot of output in output section.

#include

#include /* contains fork prototype */

main(void)

{

printf("Here I am just before first forking statement ");

fork();

printf("Here I am just after first forking statement ");

fork();

printf("Here I am just after second forking statement ");

printf("\t\tHello World from process %d! ", getpid());

}

Solution Section:

. Write above code in vi editor and put screenshot here.

Output Section:

. Put screenshot of output here.

Problem 5.2: Following program demonstrates the use of fork ( ) and getpid( ). Write this program in Oracle VM VirtualBox, compile it and run it according to lab instructor instructions and study the output.

Put the screenshot of code after writing in vi editor in solution section and screenshot of output in output section.

#include

#include /* contains fork prototype */

int main(void)

{

int pid;

printf("Hello World! ");

printf("I am the parent process and pid is : %d . ",getpid());

printf("Here i am before use of forking ");

pid = fork();

printf("Here I am just after forking ");

if (pid == 0)

printf("I am the child process and pid is :%d. ",getpid());

else

printf("I am the parent process and pid is: %d . ",getpid());

}

Solution Section:

. Write the code of above question in vi editor and put screenshot here

Output Section:

. Put screenshot of output here.