Compilare: user.cpp: In function ‘long long int tromino(int, int, int, int, int)’: user.cpp:68:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(x2-x1==y2-y1)if(x2>x1)return 2*(x2-x1); else return 2*(x1-x2); ^ user.cpp: In function ‘int getx(int, int, int, int)’: user.cpp:55:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int gety(int, int, int, int)’: user.cpp:63:1: warning: control reaches end of non-void function [-Wreturn-type] } ^