Thread: Change Program...

So I'm making a change program! Exciting!
I've only learned how to use loops... And if else statements.
So I used a lot of if/else statements in my code and was hoping there's a more efficient way to do this. I'm supposed to print out the change breakdown of the given amount. like so...
34.67 entered
1 20.00
1 10.00
0 5.00
4 1.00
2 .25
1 .10
1 .05
2 .01

I just am trying to understand loops better without having to use so many if/else statements. I don't want to get stuck into a habit of just using that all the time... Here's my code...

Code:

#include <stdio.h>

int main (void)
{
    //Declare Variables
    
    int twenty,ten,five,one, dime, nickle, penny;
    double dollar_amt, cents;
               
    //Have User Enter An Amount    
        printf("Please enter an amount: ");
        scanf("%lf", &dollar_amt);
    
    //Check if user has correct amount entered, if not have them re-enter it
    while (dollar_amt > 100.00 || dollar_amt < 0)
    {    
        
        printf("Please input an amount no more than 100.00: ");
        scanf("%lf", &dollar_amt);
            
    }
    
    //Print the amount entered
    printf("The amount entered is %2.2lf\n", dollar_amt);
    
    twenty = 20;
    if (dollar_amt > 20)
    {
        (int)dollar_amt % twenty;
    }
    else
    {
        printf("\n");
    }
    
    ten = 10;
    if (dollar_amt > 10)
    {
        (int)dollar_amt % ten;
    }
    else
    {
        printf("\n");
    }

    five = 5;
    if (dollar_amt > 5)
    {
        (int)dollar_amt % five;
    }
    else
    {
        printf("\n");
    }
    one = 1;
    if (dollar_amt > 1)
    {
        (int)dollar_amt % 1;
    }

    printf("\n");

//End Program
return 0;
}