Compilare: user.cpp: In function ‘void generateDist()’: user.cpp:74:83: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if (validPosition(left) && mat[left.y][left.x] != 'D' && mat[left.y][left.x] != '*' & dist[left.y][left.x] > 1 + dist[next.y][next.x]) { ^ user.cpp: In function ‘bool findPath(const int&)’: user.cpp:119:22: warning: statement has no effect [-Wunused-value] seen[up.y][up.x]; ^ user.cpp:124:28: warning: statement has no effect [-Wunused-value] seen[right.y][right.x]; ^ user.cpp:129:26: warning: statement has no effect [-Wunused-value] seen[down.y][down.x]; ^ user.cpp:134:26: warning: statement has no effect [-Wunused-value] seen[left.y][left.x]; ^