Thread: Add loop to calculator

So I've been coding for nearly 5 days and managed to make this calculator with some effort. Might not be the best syntax arrangement but it works. Problem is every time it does a calculation, it closes down and I have to open it up again manually.

I'd like to put a loop in the code so that it repeats this line...

Code:

        printf("1 for adding up, 2 for subtraction, 3 for multiplication and 4 for division.\n");
        scanf("%i", &selector);

...when it's done a calculation so that I can redo it without having to press F10 on Dev-C++ again.

And I have literally NO CLUE how to include the while (or for?) argument in it in order to achieve that. I'm literally clueless. I don't know how to make it work so I need to ask you guys how to do it.

Thanks a lot.

Code:

#include <stdio.h>

main()
{    


    int selector, alg1, alg2;




        printf("1 for adding up, 2 for subtraction, 3 for multiplication and 4 for division.\n");
        scanf("%i", &selector);
    
        printf("Enter two operands:\n");
        scanf("%i %i",&alg1, &alg2);
        
        switch(selector)
        {
        
            case 1:
                printf("%i + %i = %i", alg1, alg2, alg1 + alg2);
                    break;
    
            case 2:
                printf("%i - %i = %i", alg1, alg2, alg1 - alg2);
                    break;
    
            case 3:
                printf("%i * %i = %i", alg1, alg2, alg1 * alg2);
                    break;
    
            case 4:
                printf("%i / %i = %i", alg1, alg2, alg1 / alg2);
                    break;


            default:
                printf("Invalid");    
        }
    }

Strangely, the code that belongs inside the while loop is already properly indented. Put a while(1) on line 10 and an opening brace on the next line. Add a closing brace at the very end. There's your loop.

After you scanf the selector, test if it's 0 and if it is, break (out of the loop). Add a "0 to quit" option to the menu.

Originally Posted by algorism

Strangely, the code that belongs inside the while loop is already properly indented. Put a while(1) on line 10 and an opening brace on the next line. Add a closing brace at the very end. There's your loop.

After you scanf the selector, test if it's 0 and if it is, break (out of the loop). Add a "0 to quit" option to the menu.

Could you be even more specific? I'm really in the very beginning. Even with these instructions I can't figure it out what to do.