Compilare: main.cpp: In function 'void di(int, int, int, int)': main.cpp:20:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | if(x1 > x2 || y1 > y2 || pas >= s.size()) | ~~~~^~~~~~~~~~~ main.cpp:35:49: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 35 | while(s[pas] >= '0' && s[pas] <= '9' && pas < s.size()) | ~~~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:64:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 64 | for(int z = 0; z < s.size(); z++) | ~~^~~~~~~~~~