Using the code below to modify to write a C program that creates three processes. The original process creates obviously one child process and then prints out "parent". The child process print "child1". The child1 process creates a child process that print out "grandchild".The output must print out in the following order: grandchild, child1, parent. You must use fork() and if/else if/else statements.

Code to modify

pid_t child_1, child_1 = fork(); if (child_1 == 0) { /* Child 1 code */ } else { /* Parent Code */ } }