Compilare: main.cpp: In function 'int main()': main.cpp:14:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 14 | while(right<b.size()) { | ~~~~~^~~~~~~~~ main.cpp:15:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 15 | if(idx==a.size()) { | ~~~^~~~~~~~~~ main.cpp:20:42: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | while(b[left]!=a[idx] && left<b.size()) { | ~~~~^~~~~~~~~ main.cpp:31:42: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | while(b[left]!=a[idx] && left<b.size()) { | ~~~~^~~~~~~~~