"print" is probably not the best description, but I assume you want to draw an
sf::Text and use an integer as value.
If you have a C++11 compatible compiler, you can use
std::to_string otherwise, you can use a
std::stringstream. The conversion between
std::string and
sf::String can then happen rather easily.
If you still don't get how to do it, I suggest you google "int to string c++" and you'll find tons of solutions.