Compilare: main.cpp: In function 'int main()': main.cpp:28:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < sir.size(); i++) ~~^~~~~~~~~~~~ main.cpp:35:70: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if ( !paranteze.empty() && (paranteze.top().first == '(' && sir[i] ==')' || paranteze.top().first == '[' && sir[i] ==']') || paranteze.top().first == '{' && sir[i] =='}') ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~ main.cpp:35:37: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if ( !paranteze.empty() && (paranteze.top().first == '(' && sir[i] ==')' || paranteze.top().first == '[' && sir[i] ==']') || paranteze.top().first == '{' && sir[i] =='}') ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~