Compilare: main.cpp: In function 'int main()': main.cpp:17:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 17 | for(int i=0; i<v.size(); i++) | ~^~~~~~~~~ main.cpp:19:55: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | if(v[i]>='0' && v[i]<='9' || (v[i]=='-' && i+1<v.size() && v[i+1]>='0' && v[i+1]<='9')) | ~~~^~~~~~~~~ main.cpp:19:22: warning: suggest parentheses around '&&' within '||' [-Wparentheses] 19 | if(v[i]>='0' && v[i]<='9' || (v[i]=='-' && i+1<v.size() && v[i+1]>='0' && v[i+1]<='9')) main.cpp:28:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | while(i<v.size() && v[i]>='0' && v[i]<='9') | ~^~~~~~~~~