Compilare: user.cpp:7:1: warning: ‘typedef’ was ignored in this declaration [enabled by default] }; ^ user.cpp: In function ‘int main()’: user.cpp:59:25: warning: suggest parentheses around comparison in operand of ‘^’ [-Wparentheses] if(b[i].ls%2==1 xor b[i].ld%2==1) ^