Thread: New Guy needs help to enter and print x and y on one line

I'm trying to enter an 'x' and 'y' coordinate on only one line separated by a comma. But I keep getting a syntax error. Here are the lines of code I'm using. This has to be simple. What am I doing wrong with this code?

Code:

cout<< "Please enter the x and the y coordinates of the first point,"<<endl;
cout<< "use a comma to separate them. " <<endl<<endl;
cin>> "You entered: " >>x1>>",">> y1 >>"for the first point" >>endl;

The cin stream is used to retrieve input from the user not display messages. The cout stream is used to display the messages.


Jim

Thanks Jim, Senor moment. Ok cin>>x1; cin>>y1 works. So the space-bar works, but is there a way to do multiple inputs using a comma in C++?

What do you mean by "using a comma"? If you mean you want the user to enter a comma to separate the entries then yes it is possible.

Code:

int number1, number2;
char comma;

cin << number1 << comma << number2;

You could also use a string for the entire entry, the use a stringstream to process that string.

Jim

Thanks Jim
That's exactly what I needed to know. Could the comma also be used as a reference something like this char comma = &, (ampersand comma)? So it can be used (,) as a substitute for the word comma??

I have another question. I trying to work on a number line with x and y coordinates the x and y coordinates run positive to negative. (or reversed) I what to be able to divide the line into any number of points on that line but since I'm new to C++, I'm not sure of how to do this. I've already figured out how to divide the line in two. But that was a simple divide by 2. Can you give me some hints as to what to use to accomplish this. I'm thing of a 2D array with two for loops

A char can only hold one character not multiple characters. In the snippet I provided comma is a variable, it could be called anything that is allowed by the language. And also note what that one character actually is doesn't really matter (as long as it isn't a digit).

Jim

Originally Posted by jimblumberg

And also note what that one character actually is doesn't really matter (as long as it isn't a digit).

The digits have character equivalents ('0', '1', '2'...etc) so that doesn't matter, either.

In this case it does, because if you look at the code I'm using the extraction operator to retrieve a numeric variable separated by a delimiter, this delimiter can't be a digit.

Jim