Compilare: main.cpp: In function 'int main()': main.cpp:21:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for(int x=0;x<s1.size();++x) | ~^~~~~~~~~~ main.cpp:22:22: warning: array subscript has type 'char' [-Wchar-subscripts] 22 | poz[s1[x]]=x; | ^ main.cpp:24:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | while(d<s2.size() and j<s1.size()) | ~^~~~~~~~~~ main.cpp:24:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | while(d<s2.size() and j<s1.size()) | ~^~~~~~~~~~ main.cpp:26:58: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | while(s1[j-1]!=s2[d-1] and s1[j]!=s2[d] and j<s1.size()) | ~^~~~~~~~~~ main.cpp:30:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 30 | if(j==s1.size()) | ~^~~~~~~~~~~ main.cpp:35:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 35 | if(d>=s2.size()-1) | ~^~~~~~~~~~~~~ main.cpp:42:29: warning: array subscript has type 'char' [-Wchar-subscripts] 42 | if(poz[s2[d]]<=j) | ^