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variables in a string

Started by rgibson11 Mar 16, 2009 at 6:25 AM 3 replies 1.1k views

Original Post

Mar 16, 2009 at 6:25 AM

Hello, I am having some problems with displaying a font on a screen, I am using opengl with OGLFT library which uses freetype font system. It displays const char * values like "Hello" perfectly, but I need it to display for example the fps, like this FPS : (float variable here) I looked for ways to transfer numbers to strings but no luck. stringstream doesn't seem to work either. if anyone please could give me some info if you ran into this problem before, thanks,

Rewdew

Mar 16, 2009 at 6:42 AM

std::stringstream ss;std::string s;ss << fps;ss >> s;yourfunction( s.c_str() );

or if you're lazy

yourfunction( ss.str().c_str() );

or if you're very lazy

yourfunction( boost::lexical_cast<whateveryouwant>( fps ) );

swiftcoder

Mar 16, 2009 at 6:47 AM

Quote:
Original post by rgibson11
I looked for ways to transfer numbers to strings but no luck. stringstream doesn't seem to work either.

In what way does stringstream not work? It is the accepted way of performing this operation.

rgibson11

Mar 16, 2009 at 6:50 AM

Thanks a lot Rewdew, that solved it!
I have no idea but I was doing things very similar to your code but it just wasn't showing up. I guess its just due to me being fairly new to stringstreams

_Sigma

Mar 16, 2009 at 3:44 PM

boost::lexical_cast is quite useful for these types of problems.

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