Compilare: user.cpp: In function ‘bool verif(int, int, int, int)’: user.cpp:22:22: warning: suggest parentheses around comparison in operand of ‘^’ [-Wparentheses] if (((a[i].y == y1 ^ a[i+1].y == y2) && a[i].x == a[i+1].x) || a[i].y > y1 && a[i].y < y2) ^ user.cpp:22:84: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if (((a[i].y == y1 ^ a[i+1].y == y2) && a[i].x == a[i+1].x) || a[i].y > y1 && a[i].y < y2) ^ user.cpp: In function ‘int caut(int)’: user.cpp:32:17: warning: unused variable ‘dr’ [-Wunused-variable] int st = s, dr = n, mij; ^ user.cpp:32:25: warning: unused variable ‘mij’ [-Wunused-variable] int st = s, dr = n, mij; ^