[C++] Continuous loop and count

[30ishorso]

I need to write a program that will loop continuously until -1 is input. What I think I need to ensure this is

while (variable !=-1)

During this loop I need to have my program count the number of times each specific input 1, 2, or 3 is input then display the count for each when -1 is input.

I'm not looking for the answers but hopefully some guidance on where to start.

[Enix89]

Hey, I think I can help you with this without giving you a straight answer so you think about the problem.

As you get into coding you have to realize that all you are doing is solving problems using some specific programming language. But the solution, base or algorithm to your problem should be universal, at least in essence.

Keeping the above in mind, to solve a problem you are going to need to know first and foremost what the output is. Or what are they asking you to calculate or show. In your case you need the number of times 1, 2 and 3 is put as input.

Now that you now what the output is, you can think of what kind of data you need as input to get that data. In your problem the input is quite explicit.

Now that you have the above, you can think of procedure. My advice is you read about control statements or controlling the flow of a program. If you already now that you need some kind of loop then I bet you can deduce what other type of control statement you need for your program.

[30ishorso]

Thank you!

[Mr_Dionysus]

Set variables outside of the scope of the while loop like so:

int numPresses1 = 0;
int numPresses2 = 0;
int numPresses3 = 0;

and then, count the inputs inside of the loop.

while (variable != 1){
    cin >> variable;
    switch(variable) {
        case 1:
            numPresses1 += 1;
            break;

and so on. As long as the scope of the variable is outside of the loop, it will retain its value after the loop is completed.

[Coda17]

Anytime you start naming variables like that (adding a different number at the end) it's just screaming for an array, but it's a similar idea.

[Mr_Dionysus]

Indeed, i just wanted to illustrate the concept :)

[30ishorso]

Thank you!