Penny calculation not working.

gistfile1.c

#include <stdio.h>
#include <cs50.h>
#include <math.h>

#define QUARTER 25      //quarter converted to 25 cents
#define DIME 10         //dime converted to 10 cents
#define NICKLE 5        //nickle converted to 5 cents
#define PENNY 1         //penny converted to 1 cent

int main()
{

    printf("Please deposit your coins?\n");
    float coin_amount = GetFloat();
    int amount_converted = coin_amount * 100;
    
    int quarters = amount_converted / QUARTER;
    while ( amount_converted >= QUARTER )
        {
            amount_converted -= 25; 
        }
    int dimes = amount_converted / DIME;
    while ( amount_converted >= DIME )
        {
            amount_converted -= 10;
        }
    int nickles = amount_converted / NICKLE;
    while ( amount_converted >= NICKLE )
        {
            amount_converted -= 5;
        }
    int pennies = amount_converted / PENNY;
    
    printf("Quarters\t%d\n", quarters);
    printf("Dimes\t\t%d\n", dimes);
    printf("Nickles\t\t%d\n", nickles);
    printf("Pennies\t\t%d\n", pennies);
    
}