Saving result to variable

[soownic]

Hello,

So I'm just a newbie and I've been trying to write my own calculator (I've done it before but now I wanted it to be more complex and useful).

My question is: How can I save/write my results to a variable? I'm using cout to do calculations.

  cout<<a<<" + "<<b<<" = "<<a+b;

Do I have to use classes/functions to save/write my results to variable? If yes then how?

Thank you.

[koothkeeper]

How did you assign values to a and b in your example?

[soownic]

I assigned them with "cin". That example was just to illustrate how I wrote it in my previous program, I know the basics.

[koothkeeper]

Then I'm not sure I understand your question.

int main( int argc, char** argv )
    {
    int
        a = 0,        //    Assignment
        b = 0,        //    Assignment
        total = 0;  //    Assignment

    std::cout << "Enter a: " << std::endl;

    std::cin >> a;    //    Assignment

    std::cout  << "Enter b: " << std::endl;

    std::cin >> b;    //   Assignment

    total = a + b;    //   Assignment

    std::cout << "Total: " << total << std::endl;

    }

[soownic]

I'm trying to make something like "history of results". Maybe this will clear things up.

[koothkeeper]

Do you mean to save the calculations to a file?

[soownic]

No, just to e.g. 5 variables. Something like 20 >> result (in batch) but to variable not file.

[koothkeeper]

How about an array?

#define RESULTS_SIZE 5

int Results[ RESULTS_SIZE ];

for( int i = 0; i < RESULTS_SIZE; i++ )
    {
    /*    Add code to get variables:    */

    /*    Calculate the result:    */

    /*    Now assign the result to the array:    */

    Results[ i ] = total;

    }    /*    for( i < RESULTS_SIZE )    */