if and else statements

[zachattack242]

#include <iostream>



int main()

{
using namespace std;
cout << "Enter a Number";
double dX;
cin >> dX;

cout << "Enter another Number";
double dY;
cin >> dY;

cout << "Enter a Symbol";
char symbol;
cin >> symbol;


if (symbol == '+');
cout << dX << " + " << dY << " Is " << dX + dY << endl;

if ('-' == symbol);
cout << dX << " - " << dY << " Is " << dX - dY << endl;

if (symbol == '*');
cout << dX << " * " << dY << " Is " << dX * dY << endl;

if (symbol == '/');
cout << dX << " / " << dY << " Is " << dX / dY << endl;


return 0 ;
}


Pretty new to C++ and I'm learning off the tuts at learn C++. Anyways, i was doing the comprehensive quiz,(I'm using visual studio express 2k12) and I finished the task quite simply. The program runs but displays all of the math and not the math that was requested.

For example, I can input any two numbers within the double and then input a symbol; the program then shows all of the math of the two numbers, (x+y, x*y, x-y, x/y).

How do I get it to show me only the symbol that is imputed.
Thanks :)

[abhishekm71]

remove the colons after the if statements

[zachattack242]

Awesome. Thanks a bunch; Just curious, what did that do though?

[abhishekm71]

the syntax for if statements is :

 
if (condition)  // no semicolon here
   statement; // for only one statement

or 

if (condition) {
  // for multiple statements
}

what your code was doing was, it terminated the "if" statement once it reached the semicolon. All the conditional statements were executed like normal statements without the "if condition".

[zachattack242]

Ah. Thank you so much :D