While Loop

[Viper786]

I have to setup a while loop for a question in my class but i'm not sure how to do it (lab is moving a little quicker than lecture)

We have to take the word Python and set up a while loop so that once it reaches the letter h, it displays:
"This is pass block"
"Current Letter:" <print letter here>

any help would be appreciated.

[zb0S216C]

You've done this before in a previous post. All you have to do is replace the for loop with a while loop.

[Viper786]

So would it be:

    
string word = "Python";
while(int i = 0) 
    {
        if( word.at(i) == 'h' ) 
        {
             cout << "This is pass block" << endl;
             cout << "Current Letter: h" << endl;
             break;
        }
        cout << word.at(i) <<endl;
    }

[zb0S216C]

Close, but you forgot to increment i. Aftercout << word.at(i) <<endl; put i++;.

[Viper786]

string word = "Python";
while(int i = 0) 
    {
        if( word.at(i) == 'h' ) 
        {
             cout << "This is pass block" << endl;
             cout << "Current Letter: h" << endl;
             break;
        }
        cout << word.at(i) <<endl; i++;
    }

I did that and when i press control F5 (start without debugging) it doesn't display anything :\

[Moschops]

When does the condition in the while statement (i.e. int i = 0) become false to break the while loop?

I'm slightly surprised that the loop runs even once;

The value of a condition that is an initialized declaration in a statement other than a switch statement is the value of the declared variable implicitly converted to type bool.

I would have expected that integer value zero converted to type bool would come out as false. Every day is a school day.

[Viper786]

I'm sorry, i'm a total beginner when it comes to c++. I took a stab at it and apparently it's completely wrong. Can you please help me figure out what I need to do?

[zb0S216C]

Moschops has a good point. Try this:

string word = "Python";

int i( 0 );
while( i < word.length( ) ) 
    {
        if( word.at(i) == 'h' ) 
        {
             cout << "This is pass block" << endl;
             cout << "Current Letter: h" << endl;
             break;
        }
        cout << word.at(i) <<endl; i++;
    }

[Viper786]

There we go, that worked. Thanks a lot! I really appreciate the help!!