Compilare: main.cpp: In function 'int find(std::string&, std::string&, int)': main.cpp:24:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | for(int i = start, k = 0; i < t.length(); i++) { | ~~^~~~~~~~~~~~ main.cpp:29:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | if(k == s.length()) { | ~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:50:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | for(int i = 0; i < ss.length(); i++) { | ~~^~~~~~~~~~~~~ main.cpp:46:9: warning: unused variable 'k' [-Wunused-variable] 46 | int k = 0; | ^