Working With Floats and Integers

Question

I've created an ATM like program which holds the money in a person's account. When the person takes out a withdrawal, it subtracts the withdrawal from the account along with a .50 surcharge. The problem I'm having is working with both integers and floats in this program. I converted the integer account to a floating point number but I get an error message when I try to print out the statement. Can someone tell me what I'm doing wrong?

#include <stdio.h>

int main (void) {
    int account = 2000;
    int withdrawal;
    float charge = 0.50;

    printf ("How much money would you like to take out? ");
    scanf ("%i", &withdrawal);

    while (withdrawal % 5 != 0) {
        printf ("Withdrawal must be divisible by 5. ");
        scanf("%i", &withdrawal);
    }

    account = ((float) account - charge) - withdrawal;

    printf("Remaining account: %.2f\n", account);

    return 0;
}

Answer 1

Make your life a little easier, and rather than thinking of your "ints" as dollars, think of them as "cents" then you won't need floating point numbers.