Compilare: user.cpp: In function ‘int main()’: user.cpp:28:28: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] while(l>=1&&l>=c&&a[l][c]==0||a[l][c]==3){ ^ user.cpp:33:22: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] while(l>=c&&a[l][c]==0||a[l][c]==3){ ^ user.cpp:39:22: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] while(l>=c&&a[l][c]==0||a[l][c]==3){ ^ user.cpp:44:28: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] while(l<=n&&l>=c&&a[l][c]==0||a[l][c]==3){ ^ user.cpp:50:28: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] while(l<=n&&l>=c&&a[l][c]==0||a[l][c]==3){ ^ user.cpp:55:34: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] while(l<=n&&c>=1&&l>=c&&a[l][c]==0||a[l][c]==3){ ^ user.cpp:66:34: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] while(l>=c&&c>=1&&l>=1&&a[l][c]==0||a[l][c]==3){ ^