Boolean prob

Hi, I'm quite new to cpp programming, and I made this small script using Dev-C++.

Code:

#include <iostream>

using namespace std;

int main()

{
int x;
    
    cout<<"Enter 1 or 0: "; 
    cin>>x;
    cin.ignore();
    if ( x = ( 1 || 0 ) ) {
         cout<<"Hello World";
         } 
    else if ( x = ( 1 && 0 ) ) {
         cout<<"World Hello";
         }
    cin.get();
}

Problem here is, if I enter 0, it should be printing World Hello instead of Hello World, which doesn't happens. Ofcourse I could easily solve this by adding a NOT operator, but I want to know about the AND and OR operators in specific. Could someone help me out?

You're first if statement is checking to see if the value of x is EITHER a 1 or 0. If it is EITHER of those values, then it prints Hello World.

In a literal sense, your second if statement is saying if the value of x is BOTH 1 and 0, then it prints World Hello.

You would want something like this:

Code:

if(x = 1)
	 cout << "Hello World";
else
	 cout << "World Hello";

Originally Posted by xmltorrent

You're first if statement is checking to see if the value of x is EITHER a 1 or 0. If it is EITHER of those values, then it prints Hello World.

In a literal sense, your second if statement is saying if the value of x is BOTH 1 and 0, then it prints World Hello.

You would want something like this:

Code:

if(x = 1)
	 cout << "Hello World";
else
	 cout << "World Hello";

Aha! Ofcourse I understand what was in you code, but I was just playing around with the booleans. Thank you.

You're first if statement is checking to see if the value of x is EITHER a 1 or 0. If it is EITHER of those values, then it prints Hello World.

In a literal sense, your second if statement is saying if the value of x is BOTH 1 and 0, then it prints World Hello.

Not exactly.

Code:

if ( x = ( 1 || 0 ) )

1 || 0 always evaluates to a true, which you then assign to x, automatically making it execute.

Code:

else if ( x = ( 1 && 0 ) )

1 && 0 evaluates to a false, which you then again assign to x, and making it not execute.

couple of problems:

>> if ( x = ( 1 || 0 ) )

first off, your assigning a value to x, use == for comparison. the above expression would then evaluate to:

if(x == 1)

since (0 || 1) == 1

so the correct expression would be:

if (x == 1 || x == 0)

That solved the problem, assigned them to x, instead of checking them, stupid me. Tnx.