A program which counts the smallest amount of coins to give out change in the store.

cash.c

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

int main(void)
{
    float cash;
    int change;
    int amountOfCoins; //counting coins
    int coins[] = {25, 10, 5, 1};
    int i = 0;
    do
    {
        cash = get_float("How much money in $ do you have?\n");  //asks user for amount of money he has
    }
    while (cash <= 0);

    change = roundf(cash * 100);

    amountOfCoins = 0;

    while (change > 0)
    {
        if (change >= coins[i])
        {
            change -= coins[i];
            amountOfCoins++;
        }
        if (change < coins[i])
        {
            i++;
        }
    }


    printf("Coins: %i\n", amountOfCoins);
}