Compilare: main.cpp: In function 'void precalc()': main.cpp:15:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 15 | while(i < patt.size()){ | ~~^~~~~~~~~~~~~ main.cpp: In function 'void kmp()': main.cpp:33:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | while(i < s.size()){ | ~~^~~~~~~~~~ main.cpp:36:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | if(j == patt.size()){ | ~~^~~~~~~~~~~~~~ main.cpp:40:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | else if(i < s.size() and patt[j] != s[i]){ | ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:50:9: warning: unused variable 'n' [-Wunused-variable] 50 | int n, i, j; | ^ main.cpp:50:15: warning: unused variable 'j' [-Wunused-variable] 50 | int n, i, j; | ^