Compilare: main.cpp: In function 'int main()': main.cpp:11:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 11 | while ( idxb < b.size () && v.size () < 1000 ) { | ~~~~~^~~~~~~~~~~ main.cpp:13:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 13 | while ( idxa < a.size () && b[idxb + idxa] == a[idxa] ) | ~~~~~^~~~~~~~~~~ main.cpp:15:19: 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 ( idxa == a.size () ) { | ~~~~~^~~~~~~~~~~~ main.cpp:23:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for ( idxa = 0 ; idxa < v.size () ; idxa++ ) | ~~~~~^~~~~~~~~~~