linux explain the program execution results to answer the questions. (10 points per question, 20 points in total) 1. Hinclude cunistd.h> Hinclude Hinclude csys/types.h> Hinclude csys/stat.h> Hinclude-sys/wait.hs Hincluderstdio.hz Hincludesstdlib.h? /fping host ip int main[l 1 else i wait(NULL): # ( 3 ) print(" "Father process :child process is over. In");.