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How to connect string and in?

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int ext = 0; string str = "light"; string s = str + ext++; but this is not work.

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You can use stringstreams to resolve this:


#include <sstream>
using std::stringstream;

stringstream converter;
converter << "light" << ext;
string s = converter.str();

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You have to cast it to a string. Either use boost::lexical_cast or roll your own function.


#include <sstream>

template<typename R, typename T>
R lexical_cast(T const& value) {
R ret;
std::stringstream ss;
ss << value;
ss >> ret;
return ret;}

int ext = 0;
string str = "light";

string s = str + lexical_cast<string,int>(ext++);





It may seem like a lot, but it's a very usefull function to have around.

Edit: beaten :(

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