Compilare: user.cpp: In function ‘void xpand(int, int)’: user.cpp:14:20: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(x[k][j]=='2'&&x[i][j]=='1'||x[k][j]=='1'&&x[i][j]=='2')minl=min(minl,k-i-1); ^ user.cpp:17:20: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(x[k][j]=='2'&&x[i][j]=='1'||x[k][j]=='1'&&x[i][j]=='2')minl=min(minl,i-k-1); ^ user.cpp:20:20: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(x[k][j]=='2'&&x[i][j]=='1'||x[k][j]=='1'&&x[i][j]=='2')minl=min(minl,k-j-1); ^ user.cpp:23:20: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(x[k][j]=='2'&&x[i][j]=='1'||x[k][j]=='1'&&x[i][j]=='2')minl=min(minl,j-k-1); ^