Why doesnt this code work?


Im am a beginner and i wrote this so please tell me how to fix it

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2 Answers

  • ?
    Lv 7
    6 years ago
    Favourite answer

    first, answer needs to be char type

    second, you need to compare it as follows

    if(answer=='*') {...}

    you need the single quotes for a single character literal...

    and you have to get the value for your two numbers BEFORE you add them...

    #include <iostream>

    int main(void){

    int a,b,sum;

    char c;

    cout << "welcome to my calculator\nplease enter * for multiply or + for add:"

    cin >>c;

    cout << " please enter the two numbers:"

    cin << a << b;


    cout << a*b;

    else if(c=='+')

    cout << a+b;


    cout <<"huh?";

    return 0;


  • Chris
    Lv 7
    6 years ago

    Like the other answer says, you need to put the + and * in single quotes.

    Then you need to deal with three cases, like this:

    if (answer == "+") ...

    else if (answer == '*') ...

    else cout << "Invalid response"

    Finally, you can't call "sum = a + b;" before actually reading a and b from the user. The computer is dumb, it won't wait until later, it will add a and b right when you tell it to.

    If you had put your code on pastebin.com or some other side, I'd have fixed it. But I'm not going to type all that.

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