Cannot figure out how to properly increment a variable inside of a while loop, C

Question

EDIT: After re-writing my code in my IDE, for the 8th time today, I have made rookie mistake of giving my inputs a false data type, that has been fixed but my outputs still are

Answer 1

Here's the problem: There are 4 loops, one for quarters, one for dimes, one for nickels, and one for pennies. The first loop condition is correct:

while (cents >= 25)

The other three are incorrect:

while (cents > 10)
while (cents > 5)
while (cents > 1)

These all need to be changed to use >= in place of >.

Answer 2

you can do it much simple for any nominals. Use integer types.

int nominals[] = {100, 25, 10, 5, 1, 0};

void getNominals(double money, int *result)
{
    unsigned ncents = money * 100.0;
    int *nm = nominals;
    while(*nm && ncents)
    {
        *result++ = ncents / *nm;
        ncents %= *nm++;
    }
}

int main(void)
{
    int result[sizeof(nominals) / sizeof(nominals[0])] = {0};

    getNominals(4.36, result);

    for(size_t index = 0; nominals[index]; index++)
    {
        printf("%d = %d\n", nominals[index], result[index]);
    }
}

https://godbolt.org/z/WdYxxr