Why doesnt this code work?

Question

Update:

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

Answer 1

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;

if(c=='*')

cout << a*b;

else if(c=='+')

cout << a+b;

else

cout <<"huh?";

return 0;

}

Answer 2

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.