Compilare: user.cpp: In function ‘int main()’: user.cpp:109:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(b[1].h==0) ^ user.cpp:112:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(b[2].h==0) ^ user.cpp:118:12: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] else if(b[1].c!=b[2].c) ^