Compilare: user.cpp: In function ‘int main()’: user.cpp:38:34: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] else if((a-i)&(a-i-1)>0&&a-i<=i) ^ user.cpp:53:30: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] while(w&(w-1)==0||p&(p-1)==0) ++w,--p; ^ user.cpp:53:42: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] while(w&(w-1)==0||p&(p-1)==0) ++w,--p; ^