String inputs, 1 or 2?

**SkyRaign** · 10-01-2005

Basically, in the program I'm working on now, there is a point that calls for the user to input a string. Apparently, the compiler sees
characters separated by a space as separate strings. In my program there are options for this string input, for example:

Bardiche
Earth Render

Thus far I can only set it to accept one or the other; if I use
a cin followed by two strings, I can continue with Earth Render
but if I enter Bardiche the program still demands a second string.
Likewise, if I use a cin followed by one string the program will only check the input BEFORE the space for the conditions that follow. Any help on how to remedy this issue, so that the program can immediately check the input if it is one string long and if so not force the user to enter a second string?

**swanley007** · 10-01-2005

try

Code:

cin >> whatever:
cin.ignore(256,'\n');

**cboard_member** · 10-01-2005

Originally Posted by swanley007

try

Code:

cin >> whatever:
cin.ignore(256,'\n');

Damn, beat me

I've never seen that done before either. Learnt something new.

**swanley007** · 10-01-2005

Ya my code will pull all in until it encounters the enter key being pressed to input and will ignore and not add the return character to the string

**Shakti** · 10-01-2005

2 quick ways I see:

First way:
For C++ strings use std::getline, for C-strings (arrays) use std::cin.getline
These will store everything you enter until the user hits the enter-key. Then just check how many spaces there are.

second way:
Have the user input one word first, and if the word is Earth, have the user input another word.

And as a comment to swanleys "solution": That wont help the poster. How in the world does calling cin.ignore going to help him pull out the second string if there exists one?? It will just "delete" it from memory.

**SkyRaign** · 10-01-2005

Shakti, if you can post an example as to how to use std::getline, I think that would solve the problem.

**cboard_member** · 10-01-2005

Have you got any problematic code you can post up so we can help you?

Anyways, If you mean when you hit a statement like this:

Code:

cin >> mystrvar;

And you enter input like this:

Code:

Lee Thomas

And you try to output mystrvar and you only get this:

Code:

Lee

Then use fgets instead:

Code:

fgets (mystrvar.c_str(), 20);

Actually I'm pretty certain my call to fgets above is incorrect so check with MSDN / man first just to make sure

**Daved** · 10-01-2005

Your entire code if it's small enough would be helpful to diagnose the problem. It probably requires a call to ignore() to ignore a leftover newline as Dae mentioned, but if the example program provided by Shakti doesn't work it might be a known bug in VC++ 6.0 (if you use that).

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