Compilare: user.cpp: In function ‘int edist(std::string, std::string)’: user.cpp:33:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i <= t.length(); i++) ^ user.cpp:36:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < s.length(); i++) ^ user.cpp:40:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 1; j <= t.length(); j++) ^ user.cpp:48:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j <= t.length(); j++) ^ user.cpp: In function ‘int mini(int, int, int)’: user.cpp:16:1: warning: control reaches end of non-void function [-Wreturn-type] } ^