lexical_cast<string>(124.4)

[anonymous]

#include <string> #include <iostream>

using std::cout; using std::endl; using std::string;

int _tmain(int argc, _TCHAR* argv[]) {

using boost::lexical_cast;

string out = lexical_cast<string>(124.4); cout << "out = " << out << endl; system("pause");

return 0;

}

[John Maddock]

What's the bug?

You're aware that 124.4 has no exact binary representation and so you will not get "124.4" printed out?

[Antony Polukhin]

Floating point types have no exact representation. See #5796 for more details and in-depth description.