#include #include #include extern char **environ; void printenv () 1 int i = 0; while (environ[i] != NULL) { printf("%s ", environ[i]); i++; } } void main() pid_t childPid; switch (childid = fork ()) { case 0: /+ child process */ printenv (); exit(0); default: /. parent process / //printenv (); exit(0); Step 1. Please compile and run the following program, and describe your observation. Because the output contains many strings, you should save the output into a file, such as using a .out > child (assuming that a.out is your executable file name). #include #include #include extern char * environ; void printenv () int i = 0; while (environ [1] != NULL) printf(" ", environ[1]); i++; 3 void main() pidut childPid; switch (childid - fork()) case 0: child process / printenv (); exit (0) default: parent process */ //printenv () exit (0) Stay connect Application Home Workout Step 2. Now comment out the printenv () statement in the child process case (Line O), and uncomment the printenv () statement in the parent press case (Line ). Compile and run the code again, and