Eroare de compilare: main.cpp: In function 'void makeprefix()': main.cpp:12:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 12 | for(int i=1; i<pat.size(); ++i) | ~^~~~~~~~~~~ main.cpp: In function 'void KMP()': main.cpp:21:15: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'const char*' 21 | if(strlen(pat)>strlen(s)) return ; | ^~~ | | | std::string {aka std::__cxx11::basic_string<char>} In file included from /usr/include/c++/10/cstring:42, from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:48, from main.cpp:1: /usr/include/string.h:385:35: note: initializing argument 1 of 'size_t strlen(const char*)' 385 | extern size_t strlen (const char *__s) | ~~~~~~~~~~~~^~~ main.cpp:21:27: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'const char*' 21 | if(strlen(pat)>strlen(s)) return ; | ^ | | | std::string {aka std::__cxx11::basic_string<char>} In file included from /usr/include/c++/10/cstring:42, from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:48, from main.cpp:1: /usr/include/string.h:385:35: note: initializing argument 1 of 'size_t strlen(const char*)' 385 | extern size_t strlen (const char *__s) | ~~~~~~~~~~~~^~~ main.cpp:23:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for(int i=0; i<s.size(); ++i) | ~^~~~~~~~~ main.cpp:27:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | if(k==pat.size()-1) v.push_back(i-pat.size()+1),k=urm[k]; | ~^~~~~~~~~~~~~~ Non zero exit status: 1