Given the function prototype:
bool IsGreater( int, int );
Which of the following statements is not a valid call to the IsGreater function? (The data types of the variables are suggested by their names.)

a) for (i = 0; i++, IsGreater(inputInt, i))
dosomething;
b) someBoolean = IsGreater(someInt, 8);
c) if (IsGreater(5, someInt))
intCounter++;
d) while (IsGreater(inputInt, 23))
cin >> inputInt;