控制台应用程序-打印图形

创建控制台应用程序，在点击项目右键添加-新建项-类命名为:Text_09_15graphical,详细代码如下：

using System;

namespace Text_09_15graphical
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("打印三角形");
            for (int i = 0; i < 10; i++)
            {
                for (int j = 0; j < 2 * i - 1; j++)
                {
                    Console.Write("*");
                }
                Console.WriteLine();
            }
            Console.WriteLine("打印反转的三角形");
            for (int i = 0; i < 10; i++)
            {
                for (int j = 10; j > 2 * i - 1; j--)
                {
                    Console.Write("*");
                }
                Console.WriteLine();
            }
            Console.WriteLine("打印等腰三角形");
            {
                for (int i = 0; i < 10; i++)
                {
                    for (int k = 0; k < 10 - i; k++)
                    {
                        Console.Write(" ");
                    }
                    for (int j = 0; j < 2 * i + 1; j++)
                    {
                        Console.Write("*");
                    }
                    Console.WriteLine();
                }
            }
            Console.WriteLine("打印圣诞树");
            for (int n = 1; n < 7; n++)
            {
                for (int i = 1; i <= n; i++)
                {
                    for (int k = 0; k < 10 - i; k++)
                    {
                        Console.Write(" ");
                    }
                    for (int j = 0; j < 2 * i - 1; j++)
                    {
                        Console.Write("*");
                    }
                    Console.WriteLine();
                }
            }
            Console.WriteLine("打印菱形");
            for (int i = 1; i < 5; i++)
            {
                for (int j = 1; j <= 5 - i; j++)
                {
                    Console.Write(" ");
                }
                for (int k = 1; k <= 2 * i - 1; k++)
                {
                    Console.Write("*");
                }
                Console.WriteLine();
            }
            for (int i = 5; i >= 1; i--)
            {
                for (int j = 1; j <= 5 - i; j++)
                {
                    Console.Write(" ");
                }
                for (int k = 1; k <= 2 * i - 1; k++)
                {
                    Console.Write("*");
                }
                Console.WriteLine();
            }
            Console.WriteLine("打印汉字");
            for (int i = 0; i < 10; i++)
            {
                for (int k = 0; k < 10; k++)
                {
                    Console.Write(" ");
                }
                for (int j = 0; j < 10; j++)
                {
                    if (i == 0 || i == 9 || j == 0 || j == 9)
                    {
                        Console.Write("*");
                    }
                    else
                    {
                        Console.Write(" ");
                    }
                }
                Console.WriteLine();
            }
            for (int i = 0; i < 10; i++)
            {
                for (int k = 0; k < 10; k++)
                {
                    Console.Write(" ");
                }
                for (int j = 0; j < 10; j++)
                {
                    if (i == 0 || i == 9 || j == 0 || j == 9 || i == 4 || j == 4)
                    {
                        Console.Write("*");
                    }
                    else
                    {
                        Console.Write(" ");
                    }
                }
                Console.WriteLine();
            }
        }
    }
}

结果：