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bool recieves a parameter

 
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bool recieves a parameter
Simply
16 May, 2007 - 11:15 AM
Post #1

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i am trying to write a function with return type bool, namely isOdd. It receives a parameter of type int and determines whether it is odd or not. If it is odd the value true should be returned, and if it is even the value false should be returned.

This is my work thus far but its not working.

#include <iostream>
using namespace std;

int main( )
{
bool isOdd ( int i)
{
if (int i % 2 == 0)
return true;
else
return false;
}

int i;
cout << "Type in an integer: " << endl;
cin >> i;


if (isOdd(i))
cout << "The integer " << i << " is odd" << endl;
else
cout << "The integer " << i << " is not odd" << endl;
cout << endl << endl;

return 0;
}

Errors I am receiving:

a function-definition is not allowed here before '{' token
expected `,' or `;' before '{' token
`isOdd' undeclared (first use this function)
[Build Error] (Each undeclared identifier is reported only once for each function it appears in.)

This post has been edited by Simply: 16 May, 2007 - 11:16 AM
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spullen
RE: Bool Recieves A Parameter
16 May, 2007 - 12:30 PM
Post #2

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I think you need to declare the method outside the main method so:
CODE

public bool isOdd(int i){
          if(i % 2 == 0)
             return true;
          else
             return false;
}

public static void main(String[] args){
         for(int i = 0; i <= 10; i++){
              if(!isOdd(i))
                System.out.println("ODD");
         }
}

You have to watch what you're testing, and how an if statement works b/c the way you are doing it is thinking about it in an opposite way. You could change the return values in isOdd and that might fix your code.
Hope that helps

This post has been edited by spullen: 16 May, 2007 - 12:32 PM
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Amadeus
RE: Bool Recieves A Parameter
16 May, 2007 - 02:44 PM
Post #3

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Agreed...you are returning true when the result of the modulus operation with 2 is zero...meaning that you have an even number. You want to return false in that case.
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