Compilare: main.cpp: In function 'int main()': main.cpp:14:18: warning: suggest parentheses around assignment used as truth value [-Wparentheses] 14 | for(x=e=i=0;s[i]&&x<2;s[i]>47&&s[i]<58?e=1:(x+=e,e=0),++i); | ~^~ main.cpp:23:13: warning: comparison of integer expressions of different signedness: 'int' and 'const std::__cxx11::basic_string<char>::size_type' {aka 'const long unsigned int'} [-Wsign-compare] 23 | if(u!=string::npos) { | ~^~~~~~~~~~~~~~ main.cpp:28:13: warning: comparison of integer expressions of different signedness: 'int' and 'const std::__cxx11::basic_string<char>::size_type' {aka 'const long unsigned int'} [-Wsign-compare] 28 | if(v!=string::npos) { | ~^~~~~~~~~~~~~~