C++ language

Question 7 [CLO-3) Marks = 10 (4+3+3] 1. A for loop contains 3 statements; a counter initialization statement, a condition testing statement, a counter increment statement. Can any/all of these statements be omitted? Write a small program of your choice and use a for loop to generate the output. Remove 1, 2 and 3 statements and explain what effect does it have on the program output. 2. What is the difference between counter controlled and sentinel controlled repetition? Explain using examples. 3. What is the difference between pointer variable and reference parameter