Quick Question, Basic Programing

[brian75]

hi all,

since i am new to these forums i hope this is the right place to post this question. i am starting to teach myself how to program using c++ and the program i was trying to make did not complete all the required tasks.

in the below program it will only give the second out come for the second task: What where you thinking. You now have a virus. How to i change this program so it will say the first out come for odd numbers and the second for even.

#include <iostream>

using namespace std;

int main()
{
char name;

cout<<"What is the first letter of your operating system? ";
cin>>name;
cin.ignore();
cout<<"The first letter of your operating system is "<< name <<"\n";

int number;

cout<<"Please input a number 1-10: ";
cin>>number;
cin.ignore();
if ( number == ( 1, 3, 5, 7, 9 ) ) {
    cout<<"You read my mind!\n";
}
else if ( number != (1, 3, 5, 7, 9 ) ) {
    cout<<"What were you thinking. You now have a virus.\n";
}
cin.get();


}

any help is appreciated. thank you in advance.

[Noise]

This:

number == ( 1, 3, 5, 7, 9 )

does not work, you can only compare one number at a time. So you would have to use the || operator like this:

number == 1 || number == 3 || number == 5 ....

But for this purpose it is easier to use the mod operator %.
For odd numbers, n%2 = 1 and for even numbers, n%2 = 0.
So it would be

if ( number%2 == 1 ) {
    cout<<"You read my mind!\n";
}
else if ( number%2 == 0 ) {
    cout<<"What were you thinking. You now have a virus.\n";
}

[brian75]

Thanks alot. That really helped me out. I couldnt figure it out but know it makes sense why it didnt work before.