简单的打开idea
1.百度搜windows 安装vs
2.打开控制台练习
选择控制台.png
创建项目.png
基于c#完成的一些练习
static void Main(string[] args)
{
Console.WriteLine(" 打印sin函数");
PrintSinFunc();
Console.WriteLine(" 打印等腰三角形2");
PrintIsoscelesTriangle2();
Console.WriteLine(" 打印直角三角形2");
PrintRightTriangle2();
Console.WriteLine(" 打印等腰三角形1");
PrintIsoscelesTriangle1();
Console.WriteLine(" 打印直角三角形1");
PrintRightTriangle1();
Console.WriteLine(" 打印99乘法表");
PrintMultipleTable();
Console.WriteLine(" 打印3*4表格");
PrintTable();
//打印乘2的数
PrintTwoMultiple();
int v = CardType.zhangfei.GetHashCode();
CardType v1 = (CardType)Enum.Parse(typeof(CardType), "1");
Console.WriteLine(v1);
//循环练习
Console.WriteLine("请输入数字c：");
string cStr = Console.ReadLine();
int c = Convert.ToInt32(cStr);
Console.WriteLine("输出1-c的每一个数及和");
PrintEvevyNumAndSum(c);
Console.WriteLine("输出1-c的3和5的倍数及和");
PrintThreeOrFiveMultipleNumAndSum(c);
Console.WriteLine("输出1-c的和及乘积");
PrintSumAndeMultiple(c);
//输入输出练习
Console.WriteLine("Hello World!");
Console.WriteLine("请输入用户姓名");
string username = Console.ReadLine();
Console.WriteLine("Hello " + username);
//数字交换
Console.WriteLine("数字交换开始");
Console.WriteLine("请输入数字a：");
string aStr = Console.ReadLine();
int a = Convert.ToInt32(aStr);
Console.WriteLine("请输入数字b：");
string bStr = Console.ReadLine();
int b = Convert.ToInt32(bStr);
Compare(ref a, ref b);
Console.WriteLine("数字交换后");
Console.WriteLine("a=" + a);
Console.WriteLine("b=" + b);
//批量随机抽卡
Console.WriteLine("请输入要抽的次数：");
string sizeStr = Console.ReadLine();
int size = Convert.ToInt32(sizeStr);
if (size <= 0)
{
Console.WriteLine("请输入大于0的次数");
}
for (int i = 0; i < size; i++)
{
CardType card = RandomCard();
Console.WriteLine("恭喜你抽到了：" + card);
}
Console.ReadKey();
}
/**
* 打印sin函数
*/
static void PrintSinFunc()
{
int col = 2, row = 10;
for (int i = -2; i < col; i++)
{
for (int j = 0; j < row; j++)
{
if (Math.Round(Math.Sin(j)) == i)
{
Console.Write("*");
}
else
{
Console.Write(" ");
}
}
Console.WriteLine();
}
}
/**
* 打印等腰三角形2
* 7*7 矩阵 不显示部分值
*/
static void PrintIsoscelesTriangle2()
{
int col = 7, row = 7;
for (int i = 0; i < col; i++)
{
for (int j = 0; j < row; j++)
{
//前段打印直角2
if (j < 3)
{
if (j > 5 - i)
{
Console.Write("*");
}
else
{
Console.Write(" ");
}
}
//后段打印直角1
if (j >= 3)
{
if (j > i)
{
continue;
}
Console.Write("*");
}
}
Console.WriteLine();
}
}
/**
* 打印直角三角形2
* 5*5 矩阵 打印部分空值
*/
static void PrintRightTriangle2()
{
int col = 5, row = 5;
for (int i = 0; i < col; i++)
{
for (int j = 0; j < row; j++)
{
if (j > 4 - i)
{
Console.Write("*");
}
else
{
Console.Write(" ");
}
}
Console.WriteLine();
}
}
/**
* 打印等腰三角形1
*/
static void PrintIsoscelesTriangle1()
{
int col = 5, row = 5;
for (int i = 0; i < col; i++)
{
for (int j = 0; j < row; j++)
{
//分2段打印
//前段打印直角1
if (j > i && i < 3)
{
continue;
}
//后段打印反直角1
if (j < i && i >= 3)
{
continue;
}
Console.Write("*");
}
Console.WriteLine();
}
}
/**
* 打印直角三角形
* 5*5 矩阵 不显示部分值
*/
static void PrintRightTriangle1()
{
int col = 5, row = 5;
for (int i = 0; i < col; i++)
{
for (int j = 0; j < row; j++)
{
if (j > i)
{
continue;
}
Console.Write("*");
}
Console.WriteLine();
}
}
static void PrintMultipleTable()
{
int col = 9, row = 9;
for (int i = 0; i < col; i++)
{
for (int j = 0; j < row; j++)
{
if (j > i)
{
continue;
}
Console.Write("{0}*{1}={2} ", j + 1, i + 1, (i + 1) * (j + 1));
}
Console.WriteLine();
}
}
/**
* 打印3*4表格
*/
static void PrintTable()
{
int col = 3, row = 4;
for (int i = 0; i < col; i++)
{
for (int j = 0; j < row; j++)
{
Console.Write("{0}_{1} ", i + 1, j + 1);
}
Console.WriteLine();
}
}
/**
* 循环将输入的数乘以2输出，如果不能转换打印不能转换，输如end跳出循环
*/
static void PrintTwoMultiple()
{
while (true)
{
Console.WriteLine("请输入一个需要求2倍的数num（输入END结束）");
string numStr = Console.ReadLine();
numStr = numStr.ToUpper();
if (numStr == "END")
{
return;
}
int num;
bool isSuccess = int.TryParse(numStr, out num);
if (isSuccess)
{
num *= 2;
Console.WriteLine("num * 2 = {0}", num);
}
else
{
Console.WriteLine("转换失败!");
}
}
}
/**
* 打印求和和乘积值
*/
static void PrintSumAndeMultiple(int n)
{
int tmp = n;
int sum = 0;
while (n >= 1)
{
sum += n;
n--;
}
Console.WriteLine("和=" + sum);
int multiple = 1;
n = 1;
while (n <= tmp)
{
multiple *= n;
n++;
}
Console.WriteLine("乘积=" + multiple);
}
/**
* 打印1-n每一个数并求和
*/
static void PrintEvevyNumAndSum(int n)
{
int sum = 0;
while (n >= 1)
{
Console.WriteLine(n);
sum += n;
n--;
}
Console.WriteLine("和=" + sum);
}
/**
* 打印1-n 之间3，5的倍数并求和
*/
static void PrintThreeOrFiveMultipleNumAndSum(int n)
{
int sum = 0;
while (n >= 1)
{
if (IsThreeOrFiveMultipleNum(n))
{
Console.WriteLine(n);
sum += n;
}
n--;
}
Console.WriteLine("和=" + sum);
}
/**
* 判断一个数是否是三或者5的倍数
*/
static bool IsThreeOrFiveMultipleNum(int n)
{
if (n % 3 == 0 || n % 5 == 0)
{
return true;
}
return false;
}
/**
* 交换2个数
*/
static void Compare(ref int a, ref int b)
{
int c = a;
a = b;
b = c;
}
/**
* 枚举卡片类型
*/
enum CardType
{
guanyu,
zhangfei,
zhaoyun,
huangzhong,
}
static Random random = new Random(); //伪随机数 根据当前时间获取 线性同余算法
/**
* 随机获取一个卡片类型
*/
static CardType RandomCard()
{
int rInt = random.Next(0, 10);
if (rInt < 1)
{
return CardType.guanyu;
}
else if (rInt < 3)
{
return CardType.zhangfei;
}
else if (rInt < 6)
{
return CardType.zhaoyun;
}
else
{
return CardType.huangzhong;
}
}
}
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