What kind of values the controlling expression of a switch statement can take 10. Consider switch (numberGrade) case 4: letterGradeA case 3: letterGradeB case 2: letterGrade-C case 1: letterGrade- D'; case 0: letterGradeF break; default: When numberGrade is 4, what is the value of letterGrade after the execution of the code above? When numberGrade is 1, what is the value of letterGrade after the execution of the code above? I1. Consider while i 0) printf ("helloin") After the execution of the code above, how many hello's will be printed? If the initial value ofi is a number m, how many hello's will be printed after the execution of the while loop? 12. Consider while (i) printf("hello %d ", --); How many hello's will be printed after the execution of the code above? Hint: recall how to evaluate an expression and the meaning/semanties of while loop. You are discouraged to use code above. However, you need to understand it because it may well appear in the legacy C programs. 13. Consider printf("Hellon") How many times hello will be printed after the execution of the code above? Again pay attention to the evaluation of expressions and the semantics of for loop. Tis example is for you to understand a program, but you are not encouraged to write code like this