Basic Loop Question.

Jun 30, 2011 at 9:10pm

Heya, guys. So I took a giant step back and decided to re-do the fundamentals of loops. I started with the While Loop. I made a successful code that asks the user to input two numbers, a Maximum number and a starting number.

Max = 50

Start = 1

The loop will add 1 each time until it reaches 50. :)

Now, what I want to do, is make it so that the starting number multiplies itself until it reaches the maximum number, but I have one small problem.

Here is the code:

#include <iostream>
using namespace std;

int main()
{
    int maxNumber;
    int startNumber;

    cout << "Hello, there!  Choose a maximum number for this loop, please." << endl;
    cin  >> maxNumber;

    cout << "Now, enter the starting number of the loop." << endl;
    cin  >> startNumber;

        while (startNumber != maxNumber){
            cout << startNumber * startNumber << endl;
            startNumber ++;
        }

    return 0;
}

Edit & run on cpp.sh

So, I put 50 as the max number, and 2 as the starting number.

The output is this:

2
4
9
16
25
36
...
...
...
2209
2304
2401

Why is this? Thanks for the help.

Jun 30, 2011 at 9:33pm

Zhuge (4664)

Perhaps because startNumber never exactly equals maxNumber, so the loop never terminates? Try using greater than or less than instead of simple equality.

Jun 30, 2011 at 9:33pm

RialnisMada (33)

Right! I just thought of that. Okay, give me a couple of minutes. Haha, it just hit me! :P

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Basic Loop Question.