Integer Division And Modulo

Compute change.

A cashier distributes change using the maximum number of five dollar bills, followed by one dollar bills. For example, 19 yields 3 fives and 4 ones. Write a single statement that assigns the number of one dollar bills to variable numOnes, given amountToChange. Hint: Use the % operator.
#include <stdio.h>

int main(void) {
 int amountToChange;
 int numFives;
 int numOnes;

amountToChange = 19;
 numFives = amountToChange / 5;

numOnes = amountToChange % 5;

printf("numFives: %d\n", numFives);
 printf("numOnes: %d\n", numOnes);

return 0;