Compilare: main.cpp: In function 'int main()': main.cpp:26:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | for(int i = 1; i < s1.size(); i++){ | ~~^~~~~~~~~~~ main.cpp:34:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | while(i + z[i] < s1.size() && s1[i + z[i]] == s1[z[i]]){ | ~~~~~~~~~^~~~~~~~~~~ main.cpp:47:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | for(int i = 1; i < s2.size(); i++){ | ~~^~~~~~~~~~~ main.cpp:50:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | while(i + z2[i] < s2.size() && s2[i + z2[i]] == s2[z2[i]]){ | ~~~~~~~~~~^~~~~~~~~~~