Here is the final version of the pSet1 Cash problem. I couldn’t work out how to use the % operator. I may come back to revise the problem if in the future it becomes clearer.

```
#include <cs50.h>
#include <stdio.h>
#include <math.h>
int main (void)
{
float input;
int cents;
int coins;
//Prompt user for an amount of change
do {
input = get_float("How much change: ");
}
while (input < 0);
cents = input * 100;
printf("%0.2i\n", cents);
coins = 0;
while (cents >= 25)
{
cents = cents - 25;
coins ++;
}
while (cents >= 10)
{
cents = cents - 10;
coins ++;
}
while (cents >= 5)
{
cents = cents - 5;
coins ++;
}
while (cents >= 1)
{
cents = cents - 1;
coins ++;
}
printf ("%i\n", coins);
}
```

The final results prints as follows:

```
How much change: .75
75
3
```