Thread: C++ Codelab problem

I'm a beginner into C++ and am using CodeLabs (Turing) for homework. I'm working on a problem that states:

"Write a loop that reads positive integers from standard input and that terminates when it reads an integer that is not positive. After the loop terminates , it prints out the sum of all the even integers read. Declare any variables that are needed."

Here is my code:

insert

Code:

int n, sum;
sum = 0;
{
      cin >> n;
      while (n % 2 == 0)
      {
       sum = n + sum;
       cin >> n;
      }
      if (n % 2 != 0)
      {
       cout << sum;
      }
}

I've tested the code using Visual Studio and it works as described, however the results say I have a run-time error and I should be using a > somewhere. I can't figure this out.

Any help would be greatly appreciated. Also I'm not sure if the spacing is going to be edited correctly in this post (there is spacing).

OP: any odd number ends your program (combination of lines 5 and 10) while 0 or negative numbers don't. Have a boolean that turns on when a negative integer or 0 is entered and passes control of the program to code that reports sum of even numbers entered so far:

Code:

#include <iostream>
//using namespace std is not a good idea (google it!)
int main()
{
    bool fQuit = false;
    int sum{};
    while(!fQuit)
    {
        std::cout << "Enter number: \n";
        int n{};


        std::cin >> n;//consider additional input validation here in case of incorrect entry
        if (n <= 0)
        {
            fQuit = true;
            break;//gets you out of the while loop
        }
        else
        {
            if(n % 2 == 0)//only add even numbers
            {
                sum += n;
            }
        }
    }
    if(fQuit == true)//checks you've broken out of the while loop
    {
        std::cout << sum << '\n';//reports sum of even numbers
    }
}