public static void Main()
Console.Write("How many rows?: ");
int rows = Convert.ToInt32(Console.ReadLine());
Console.Write("How many columns?: ");
int columns = Convert.ToInt32(Console.ReadLine());
Console.Write("What symbol or character?: ");
string symbol = Console.ReadLine();
for(int i = 0; i < rows; i++)
for(int j = 0; j < columns; j++)