Compilare: main.cpp: In function 'int main()': main.cpp:31:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | for(int i=0;i<word.size();++i) | ~^~~~~~~~~~~~ main.cpp:37:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | for(int i=1;i<=txt.size();++i) | ~^~~~~~~~~~~~ main.cpp:39:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for(int i=0;i<txt.size();++i) | ~^~~~~~~~~~~