Compilare: user.cpp: In function ‘int vecini(int, int)’: user.cpp:38:28: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(x[i][j]=='1'&&x[a][b]=='2'||x[i][j]=='2'&&x[a][b]=='1') ^ user.cpp: In function ‘void fill(int, int, char)’: user.cpp:47:11: warning: unused variable ‘q’ [-Wunused-variable] int k,q,a,b; ^