C#基础第二天-作业答案-九九乘法表-打印星星

时间:2021-08-10 15:50:38
题一:九九乘法表的答案    

            //正三角
for (int i = ; i < ; i++)
{
for (int j = ; j <= i; j++)
{
Console.Write("{0}*{1}={2} ", j, i, i * j);
}
Console.WriteLine();
}
Console.ReadLine(); //倒三角
for (int i = ; i >= ; i--)
{
for (int j = i; j >= ; j--)
{ Console.Write("{0}*{1}={2} ", i, j, i * j); //不换行
}
Console.WriteLine(); //换行
}
Console.ReadLine(); 反倒三角
string sd = string.Empty;
for (int i = ; i >= ; i--)
{
for (int j = i; j >= ; j--)
{
string k = " ";
if (j * i > )
{
k = " ";
}
Console.Write("{0}*{1}={2}{3}", j, i, i * j, k);
}
Console.WriteLine();
sd += " ";
Console.Write(sd);
}
Console.ReadLine(); 题二: //星星图1
Console.WriteLine("请输入您想看到的星星行数");
int num = Convert.ToInt32(Console.ReadLine());
for (int hang = ; hang <= num; hang++)
{
string k = String.Empty;
string x = String.Empty;
for (int kong = ; kong <= num - hang; kong++)
{
k += " ";
}
for (int xing = ; xing <= hang; xing++)
{
x += "* ";
}
Console.WriteLine(k + x + k);
}
Console.ReadLine(); //星星图(倒三角星星)
Console.WriteLine("请输入您想看到的星星行数");
int num = Convert.ToInt32(Console.ReadLine());
for (int hang = ; hang <= num; hang++)
{
string k = String.Empty;
string x = String.Empty;
for (int kong = ; kong <= hang - ; kong++)
{
k += " ";
}
for (int xing = ; xing <= num - hang + ; xing++)
{
x += "* ";
}
Console.WriteLine(k + x + k);
}
Console.ReadLine(); ////星星图四
Console.WriteLine("请输入您想看到的星星行数");
int num = Convert.ToInt32(Console.ReadLine());
int gg = num * ;
for (int hang = ; hang <= num; hang++)
{
string k = String.Empty;
string x = String.Empty;
for (int kong = ; kong <= gg - * hang; kong++)
{
k += " ";
}
for (int xing = ; xing <= hang; xing++)
{
x += "* ";
}
Console.WriteLine(k + x);
}
Console.ReadLine(); //星星图(倒三角*)
Console.WriteLine("请输入您想看到的星星行数");
int num = Convert.ToInt32(Console.ReadLine());
int gg = num * ;
for (int hang = ; hang <= num; hang++)
{
string k = String.Empty;
string x = String.Empty;
for (int kong = ; kong <= * (hang - ); kong++)
{
k += " ";
}
for (int xing = ; xing <= num - hang + ; xing++)
{
x += "* ";
}
Console.WriteLine(k + x);
}
Console.ReadLine(); //星星图(最终效果菱形)
int a = int.Parse(Console.ReadLine());
for (int i = ; i <= a; i++)
{
string k = String.Empty;
string x = String.Empty;
for (int s = ; s < a - i + ; s++)
{
k += " ";
}
for (int d = ; d < * i - ; d++)
{
x += "*";
}
Console.WriteLine(k + x + k);
}
for (int i = a - ; i > ; i--)
{
string k = String.Empty;
string x = String.Empty;
for (int s = ; s < a - i + ; s++)
{
k += " ";
}
for (int d = ; d < * i - ; d++)
{
x += "*";
}
Console.WriteLine(k + x + k);
}
Console.ReadLine();
//星星图(显示 图四效果/图五效果)最终显示图六效果 for (int i = ; i <= ; i++)
{
for (int j = ; j <= - i; j++)
{
Console.Write(" ");
}
for (int k = ; k <= i; k++)
{
Console.Write("*");
}
Console.WriteLine("");
}
for (int i = ; i >= ; i--)
{
for (int j = ; j <= - i; j++)
{
Console.Write(" ");
}
for (int k = ; k <= i; k++)
{
Console.Write("*");
}
Console.WriteLine("");
}
Console.ReadKey();

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