Compilare: main.cpp: In function 'int main()': main.cpp:24:26: 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(i = 0; i < s.size(); i++){ | ~~^~~~~~~~~~ main.cpp:32:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for(i = 0; i < s.size() - 2; i++) | ~~^~~~~~~~~~~~~~ main.cpp:38:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for(i = 0; i < s.size() - 2; i++) | ~~^~~~~~~~~~~~~~ main.cpp:46:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 46 | for(i = 0; i < s.size() - 1; i++){ | ~~^~~~~~~~~~~~~~ main.cpp:54:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 54 | for(i = 0; i < s.size() - 3; i++) | ~~^~~~~~~~~~~~~~ main.cpp:60:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | for(i = 0; i < s.size() - 2; i++) | ~~^~~~~~~~~~~~~~ main.cpp:72:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 72 | for(j = i + 1; j < s.size(); j++) | ~~^~~~~~~~~~ main.cpp:81:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 81 | for(j = i + 1; j < s.size(); j++) | ~~^~~~~~~~~~