Compilare: main.cpp: In function 'int main()': main.cpp:27:27: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 27 | for (int i = 1; i < strlen(a); ++i) | ~~^~~~~~~~~~~ main.cpp:55:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 55 | for (int i = 2; i < b.size() && !original; ++i) | ~~^~~~~~~~~~