Integer Division, and the Cast That Undoes It

Read two ints from standard input with a single scanf call, then report the same division three ways: as an integer division, as a real division obtained by casting one operand to double, and as that double stored back into an int. Declare total as an int initialized to 0 and parts as an int initialized to 1, because parts is about to be a divisor and dividing an int by zero is undefined behaviour. Print scanf's conversion count first, then the three results. Watch what happens on the negative input: both truncations discard the fractional part rather than rounding, and they discard it toward zero, so -3.5 becomes -3 and not -4.