Compilare: main.cpp: In function 'char getLevenshtein(std::__cxx11::string, std::__cxx11::string)': main.cpp:25:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i <= str1.length(); ++i) { ~~^~~~~~~~~~~~~~~~ main.cpp:27:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j <= str2.length(); ++j) { ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:72:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cuvinte5.in", "r", stdin); ^ main.cpp:74:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cuvinte5.out", "w", stdout); ^