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;