分享几个上机案例题

清疚 2022-11-18 02:11 155阅读 0赞

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1.从控制台中输入一个数，如果是1，输出壹；如果是2，输出贰，如果是三，输出叁，否则输出没有

static void Main(string [] args)
    {
        Console.WriteLine("请输入一个数");
        int a=int.Parse(Console.ReadLine());
        test1(a);
    }
    static void test1(int i)
    {
      switch(i)
      {
            case1:
              Console.WriteLine("壹");
            break;
            case2:
              Console.WriteLine("贰");
            break;
            case3:
              Console.WriteLine("叁");
            break;
            default:
              Console.WriteLine("没有");
            break;
      }
    }

2.从控制台中输入一组数据，放在数组中，使用for循环遍历输出

static void Main(string [] args)
    {
        Console.WriteLine("指定数据长度：");
        int length=int.Parse(Console.ReadLine());
        int [] i=new int[length];
        test2(length,i)
    }
    static void test2(int length,int[]array)
    {
       for(int i=0;i<Length;i++)
       {
           Console.WriteLine("请输入:");
           array[i]=int.Parse(Console.ReadLine());
       }
       Console.WriteLine("输出:");
       for(int i=0;i<=Length-1;i++)
       {
           Console.WriteLine(array[i]+",");
       }
    }

3.冒泡排序将一组数据从小到大输出

static void Main(string [] args)
    {
        int [] i=new int[]{1,3,1,4,5,2,0};
        test3(i);
    }
    static void test3(int []array)
    {
        int temp;
        for(int i=0;i<array.Length-1;i++)
        {
            for(int j=0;j<array.Length-1-i;j++)
            {
                if(array[j]>array[j+1])
                {
                    temp=array[j];
                    array[j]=array[j+1];
                    array[j+1]=temp;
                }
            }
        }
    }

4.循环输出1-200之间，所有三的倍数之和

static void Main(string [] args)
    {
        test4(1,200);
    }
    static void test4(int start,end)
    {
        for(start;start<=end;start++)
        {
            if(start%3==0)
            {
                Console.WriteLine(start);
            }
        }
    }

5.使用do-while循环输出1-100之间所有整数之和

static void Main(String [] args)
    {
        test5(1,100);
    }
    static void test5(int sta,int end)
    {
        int sum=0;
        do
        {
            sum=sum+sta;
            sta++;
        }while(sta<=end);
        Console.WriteLine(sum);
    }

6.从控制台中输入5个学生的名字，使用foreach遍历

static void Main(String [] args)
    {
        string [] str=new string[5];
        test6(str);
    }
    static void test6(string [] str)
    {
        for(int i=0;i<str.Length;i++)
        {
            Console.WriteLine("请输入学生名：")
            str[i]=Console.ReadLine();
        }
        foreach(string s in str)
        {
            Console.WriteLine(s);
        }
    }

7.创建一个类Car,其中包含两个属性,name和color,封装两个属性，规定颜色只有银色，黑色和白色，其他默认黑色

class Car
    {
        private string name;
        public string Name
        {
            get{return this.name;}
            set{this.name=value;}
        }
        
        private char color;
        public char GetColor()
        {
            return color;
        }
        public void SetColor(char color)
        {
            if(color.Equals('银')||color.Equals('黑')||color.Equals('白'))
            {
                this.color=color;
            }else
            {
                color='黑';
            }
        }
    }

8.输出99乘法表

static void Main(String [] args)
    {
        test8();
    }
    static void test8 ()
    {
        for(int i=1;i<=9;i++)
        {
            for(int j=1;j<=i;j++)
            {   
                Console.Write(i+"*"+j+"="+(i*j)+"\t");
            }
            Console.WriteLine();
        }
    }

9.声明一个有参有返回值的方法，并且在main方法中调用

static void Main(string [] args)
    {
        int i=test9(9);
    }
    static int test9(int i)
    {
        i++;
        return i;
    }

10.有一个字符串“我爱你中国”   输出字符串的长度，输出爱的位置，如何截取中国两字，输出格式为：“我，爱，你，china”

static void Main(string [] args)
    {
      string str="我爱你中国";
        
        Console.WriteLine(str.Length);
        int index = str.IndexOf("爱");
        Console.WriteLine(index);
        string china;
        //只有一个参数的时候，默认截取至最后
        china=str.Substring(str.IndexOf("中"));
        
        //输出“我，爱，你，china”
        test10(str);
    }
    static void test10(string str)
    {
        for(int i=1;i<=6;i+=2)
        {
            str=str.Insert(i,",");
        }
      str=str.Replace("中国","china");
        Console.WriteLine(str);
    }

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