Compilare: user.cpp: In function ‘int main()’: user.cpp:53:30: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(a[i][j]==-1&&a[i-1][j]==0||a[i][j]==-1&&a[i][j-1]==0||a[i][j]==-1&&a[i+1][j]==0||a[i][j]==-1&&a[i][j+1]==0) ^ user.cpp:53:84: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(a[i][j]==-1&&a[i-1][j]==0||a[i][j]==-1&&a[i][j-1]==0||a[i][j]==-1&&a[i+1][j]==0||a[i][j]==-1&&a[i][j+1]==0) ^ user.cpp:53:111: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(a[i][j]==-1&&a[i-1][j]==0||a[i][j]==-1&&a[i][j-1]==0||a[i][j]==-1&&a[i+1][j]==0||a[i][j]==-1&&a[i][j+1]==0) ^