Compilare: main.cpp: In function 'int main()': main.cpp:22:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for ( int i = 1; i < s.size(); i++ ) { | ~~^~~~~~~~~~ main.cpp:32:24: 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 ( int i = 0; i < s.size(); i++ ) { | ~~^~~~~~~~~~ main.cpp:33:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | if ( p[i] == a.size() ) { | ~~~~~^~~~~~~~~~~