Seventh Day Learning Content array

Using System;
Using System.Collections.Generic;
Using System.Linq;
Using System.Text;
Using System.Threading.Tasks;

Namespace Day07
{
Class Program
{
static void Main (string[] args)

//  Alarm Alerts
           /*         datetime dt = new DateTime ();
                      dt = DateTime.Now;
                      string t= "2015/03/04 18:30";  //Definition alarm sounded time
                      DateTime a= Convert.todatetime (t);//and Convert to datetime format
                      while (true)
                      {

if (dt >= a)//Enter judgment when time is now greater than or equal to set time
{
Console.WriteLine ("Watch the news broadcast");
Console.WriteLine ("Whether to turn off the alarm y/n");
string x = Console.ReadLine (); Define a variable to accept the value of the input
if (x = = "n")
{

A = A.addminutes (5); When you enter n time +5, five minutes to remind
}
Else
{
Break Jump out of Loop when Y is entered
}
}
else//Current time is less than set time output time and +1
{
Console.WriteLine ("The Time is now" + DT);
DT = dt. AddMinutes (1);
}

}

One-dimensional arrays
while (true)
{
String[] weekdays = new string[] {"Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"};
int day = Convert.ToInt32 (Console.ReadLine ());
if (day<=weekdays. Length)
{
Console.WriteLine (Weekdays[day-1]);
}
Else
{
Console.WriteLine ("Incorrect input");
}
}

Two-dimensional array printing "Tian" word
string[,] arr = new string[5, 5];
for (int i = 0; i < 5; i++)//control line
{
for (int j = 0; J < 5; J + +)//Control column
{
if (i==0| | i==4| | j==2| | j==0| | j==4| | i==2)//print at specified location
{
Arr[i, J] = "";
}
Else
{
Arr[i, J] = "";
}
}

}

for (int i = 0; I <5; i++)//print array
{
for (int j = 0; J <5; J + +)
{
Console.Write (Arr[i,j]);

}
Console.Write ("\ n");
}

Console.readkey ();

Enter 10 students ' scores, remove two highest points and two minimum points, and ask for an average score
int[] CJ = new INT[10];
for (int i = 1; i <=; i++)
{
Console.WriteLine ("Please enter the" + i + "bit of the classmate's score:");
Cj[i-1] = Convert.ToInt32 (Console.ReadLine ()); Enter scores and assign values to the array
}
for (int k = 0; k <10; k++)//bubble sort sort by large to small
{
for (int j = k+1; J <, J + +)
{

if (Cj[k] <= cj[j])
{
int A;
A = Cj[k];
CJ[K] = Cj[j];
CJ[J] = A;

}

}
}
for (int i = 0; i <; i++)
{
Console.WriteLine (Cj[i]); Print sorted array
}
Double avr,sum=0;
for (int i = 2; I <8; i++)
{
Sum + = Cj[i]; To remove the scores from the two highest and two minimum points

}
AVR = SUM/6; Calculate the average score
Console.WriteLine (AVR);
Console.readkey (); */

Seventh Day Learning Content array