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POConverting double to string. Boost Libraries appear not to work, and sstream causes "SEG FAULT"
 

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  1. POConverting double to string. Boost Libraries appear not to work, and sstream causes "SEG FAULT"
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    <p>I have a simple problem, and I think I'm just doing something stupid which is causing a SEGFAULT.</p> <p>I simply want to convert a double variable to a string, and then 'strcat()' them both together and put the resultant concatenated string in a GTK Label. (It should be simple, surely?!)</p> <p>Here is a section of my code:</p> <pre><code>double fps_target = 2.71828 std::string fps_target_string; std::stringstream convert; convert &lt;&lt; fps_target; fps_target_string = convert.str(); g_print("seg fault occurs below"); label_fps_target = gtk_label_new(strcat("FPS Target: ", (const char*) fps_target_string.c_str())); </code></pre> <p>Why cannot it work?! :(</p> <p>I tried using the Boost::Lexical_Cast thing, but that didn't work:</p> <pre><code>double fps_target = 3.14159; const char* fps_target_string = (const char*) (boost::lexical_cast&lt;std::string&gt;(fps_target)); </code></pre> <p>Any help is greatly appreciated. If either method works that would be awesome, but I'm not really bothered about how to do it, so long as I can get a double to cat with a string!</p>
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