Thread: Jumping into C++ : Chapter 6 Practice Problem 2

Hello everyone, i have started to learn C++ with the help of the book called Jumping into C++. Now i have hit the first wall, i am not sure what i am doing wrong, or i just lack knowledge to make it work.

My task says:

Make your calculator program perform computations in a seperate function for each type of computation.

My only problem is, when i am about to add a value for x or y and i add NOT a number, so for example a letter like f. Then my while loop becomes an infinite loop with the infinite spam of else statement.

I am stuck at this for 2 days now, and i do not really wanna move forward more in the book until i do not finish all the Practice Problems.

Code:

#include <iostream>
#include <string>

using namespace std;

int add(int x, int y)
{
    return x+y;
}

int subtract(int x, int y)
{
    return x-y;
}

int divide(int x, int y)
{
    return x/y;
}

int multiply(int x, int y)
{
    return x*y;
}

int main()
{
    int x;
    int y;
    string symbol;
    cout<< "Enter your first number: ";
    cin>>x;
    cout<< "Enter your second number: ";
    cin>>y;
    cout<< "Enter your argument: ";
    cin>>symbol;
    
    while(1)
    {
        if(symbol=="+")
        {
            cout<< "Your number is: ";
            cout<< add(x,y);
            break;
        }
        else if(symbol=="-")
        {
            cout<< "Your number is: ";
            cout<< subtract(x,y);
            break;
        }
        else if(symbol=="/")
        {
            if(y==0)
            {
                cout<< "Divide cannot be done with 0, please try again.\n";
                cout<< "Enter your second number again: ";
                cin>>y;
            }
            cout<< "Your number is: ";
            cout<< divide(x,y);
            break;
        }
        else if(symbol=="*")
        {
            cout<< "Your number is: ";
            cout<< multiply(x,y);
            break;
        }
        else
        {
            cout<< "Invalid character(s). Please try again.\n";
            cout<< "Enter your first number: ";
            cin>>x;
            cout<< "Enter your second number: ";
            cin>>y;
            cout<< "Enter your argument: ";
            cin>>symbol;
        }
    }
}

Thanks for the answers!