In Xcode, both in Objective-C and C, we have the while loop.

int number = 5;
while (number > 0){
    NSLog(@"The number is %i",number--);
}

The python equivalent is also while Since we already understand the block, know sometimes as a suite in Python, while loops in  Python are very simple to use.

number = 5
while number > 0:
    number = number -1
    print ('The number is ', number)

We can use break in a loop to break execution. This is a valid loop if we need to test at the end of the loop

number = 5
while True:
    number = number -1
    print ('The number is ', number)
    if number < 0:
        break