Compilare: main.cpp: In function 'int main()': main.cpp:33:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | while(l<el.first.size() && k<strlen(s)){ | ~^~~~~~~~~~~~~~~~ main.cpp:33:49: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 33 | while(l<el.first.size() && k<strlen(s)){ | ~^~~~~~~~~~