sample run: sh -c make -s ./main Please enter your name?: aman Thankyou Please enter your first subject! math Please enter mark for math (# between 0 and 100): -1 Invalid Input! Please enter mark for math (# between 0 and 100): 101 Invalid Input! Please enter mark for math (# between 0 and 100): 78 Please enter your second subject! science Please enter mark for science (# between 0 and 100): 89 Please enter your third subject! P.E Please enter mark for P.E (# between 0 and 100): 98 Please enter your fourth subject! french Please enter mark for french (# between 0 and 100): 67 average = 83% Subject marks math 78 science 89 P.E 98 french 67 ---------------------------- Average 83% Do you want to repeat 1-yes, 2-no, Enter choice: 1 Please enter your name?: