So I'm trying to create a calculator with c++ to practice the conditionals but It doesn't work any help?

Question

this is the program so far (I'll skip include iostream and etc)

int answer;
int num1;
int num2;
cout << "What kind of calclulation do you want to do? " ;
cin >> answer ;
if (answer == addition) {
cout << "select your first number " ;
cin >> num1 ;
cout << "select your second number " ;
cin >> num2;
cout << "This equals to " << num1 + num2;

And then I did the same but instead of audition I did subtraction...you get the idea. Now I get an error that addition is unidentified I can guess why this is wrong but how can I make this work. Also I am a complete begginer so sorry if the answer is something stupid.

I also tried puting addition in "" but then I got an error saying that the == are incompatible

Answer 1

You are reading an integer so you need to test it against one. For example, prompt with this:
What kind of calclulation do you want to do? 1=addition, 2=subtraction

then, test this:
if (answer == 1) {...}
else if (answer == 2) {...}

Answer 2

https://code.sololearn.com/c8wUuxNq8YhZ/?ref=app

That's an example of a simple calculator. I didn't use any if statements here, though.
Your problem is that you have declared 'answer' variable as an integer. The solution might be:
cout << "Type 1 for addition, 2 for subtraction, 3 for...";
cin >> answer;
if (answer == 1) {
...
}
else if (answer == 2) {
...
}
else...