Compilare: main.cpp: In function 'void computeZ()': main.cpp:20:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | for( i = 0; i < s.size(); i++ ) { | ~~^~~~~~~~~~ main.cpp:23:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | while( r < s.size() && s[r - i] == s[r] ) r++; | ~~^~~~~~~~~~ main.cpp:32:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | while( r < s.size() && s[r - i] == s[r] ) r++; | ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:49:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | for( i = pattern.size() + 1; i < s.size(); i++ ) { | ~~^~~~~~~~~~ main.cpp:50:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | if( z[i] == pattern.size() ) | ~~~~~^~~~~~~~~~~~~~~~~