Question

I’m having a bit of a problem with this piece of code:

string StringServices::ToStringf(float value)
{
    char buffer[10]; 

    sprintf (buffer, "%f", value);

    return  (string) buffer; // signal SIGABRT
}

Its been working previously and continues to work for other calls, but I currently get a SIGABRT on the return, when the function is being passed -211.0

The buffer loads up fine, and I’m really not sure why this isn’t working. Can someone who understands std::string and c strings a lot better then me help me out here?

Answer 1

You probably overflowed your buffer because you’re not using snprintf. You have this tagged C++ so do it that way:

std::string buffer = boost::lexical_cast<std::string>(value);

Or without boost use a string stream:

std::ostringstream os;
os << value;
// os.str() has the string representation now.