Borderou de evaluare (job #746762)

Compilare: main.cpp: In function 'int main()': main.cpp:22:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 22 | for(int j=0;j<s.size()&&!f;j++) | ~^~~~~~~~~ main.cpp:30:51: warning: suggest parentheses around '&&' within '||' [-Wparentheses] 30 | else if(!ch.empty() && (ch.top()=='(' && s[j]==')' || ch.top()=='[' && s[j]==']' || ch.top()=='{' && s[j]=='}')) | ~~~~~~~~~~~~~~^~~~~~~~~~~~ main.cpp:30:112: warning: suggest parentheses around '&&' within '||' [-Wparentheses] 30 | else if(!ch.empty() && (ch.top()=='(' && s[j]==')' || ch.top()=='[' && s[j]==']' || ch.top()=='{' && s[j]=='}')) | ~~~~~~~~~~~~~~^~~~~~~~~~~~