pset1 water how to ignore negative number

Question

On the screenshot is the result after I typed a negative integer. How do I ignore the negative integers on bottles' result? Help pls.

The positive & zero results are just fine, but the negatives are not finishing the do-while loop to prompt the user another digits for minutes. What is wrong here please?

TIA

Answer 1

The idea is to use a DO-WHILE loop as you do in your program but we will use it when ordering an integer with the function get_int():

do 
{
    printf("Enter an integer"
    minutes = get_int()
}
while(minutes < 0)

The loop will be repeated while minutes are less than zero, the rest of the program should not go inside a loop