Compilare: main.cpp: In function 'int main()': main.cpp:23:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<paranteze.size();i++) ~^~~~~~~~~~~~~~~~~ main.cpp:28:31: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if (paranteze[i]==')' && stiva.top()=='('|| paranteze[i]==']' && stiva.top()=='['|| paranteze[i]=='}' && stiva.top()=='{') main.cpp:28:111: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if (paranteze[i]==')' && stiva.top()=='('|| paranteze[i]==']' && stiva.top()=='['|| paranteze[i]=='}' && stiva.top()=='{')