using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication2
{
class Program
{
static void Main(string[] args)
{
try
{
Console.Write("请输入等腰三角形的行数:");
int number = Convert.ToInt32(Console.ReadLine());
for (int i = 1; i <= number;i++ )
{
for (int j = 1; j <=number-i; j++)
{
Console.Write(" ");
}
for (int a = 1; a <= 2*i-1; a++)
{
Console.Write("*");
}
Console.WriteLine();
}
}
catch
{
Console.WriteLine("您输入的程序错误");
}
Console.ReadKey();
}
}
}

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