Switch Structure 2016/03/08

Switch 03/08

First, the structure

Switch () {case *:; Break;......default:; Brek;}

Exercise: Enter a date to determine the day of the year?

Console.Write ("Please enter the month");
int m = Int. Parse (Console.ReadLine ());
Console.Write ("Please enter the date");
int d = Int. Parse (Console.ReadLine ());
int m1 = to, M2 = 30, M3 = to, M4 =, M5 = To, M6 =--M7 =--M8 = =, M9 =-M10
Switch (m)
{
Case 1:
Console.WriteLine ("S" + (d) + "Day");
Break
Case 2:
Console.WriteLine ("First" + (M1 + D) + "Day");
Break
Case 3:
Console.WriteLine ("First" + (M1 + m2 + D) + "Day");
Break
Case 4:
Console.WriteLine ("First" + (M1 + m2 + m3 + d) + "Day");
Break
Case 5:
Console.WriteLine ("First" + (M1 + m2 + m3 + m4 + D) + "Day");
Break
Case 6:
Console.WriteLine ("First" + (M1 + m2 + m3 + M4 + M5 + D) + "Day");
Break
Case 7:
Console.WriteLine ("First" + (M1 + m2 + m3 + M4 + M5 + M6 + D) + "Day");
Break
Case 8:
Console.WriteLine ("First" + (M1 + m2 + m3 + M4 + M5 + M6 + M7 + D) + "Day");
Break
Case 9:
Console.WriteLine ("First" + (M1 + m2 + m3 + M4 + M5 + M6 + M7 + m8 + D) + "Day");
Break
Case 10:
Console.WriteLine ("First" + (M1 + m2 + m3 + M4 + M5 + M6 + M7 + m8 + M9 + D) + "Day");
Break
Case 11:
Console.WriteLine ("First" + (M1 + m2 + m3 + M4 + M5 + M6 + M7 + m8 + M9 + M10 + D) + "Day");
Break
Case 12:
Console.WriteLine ("First" + (M1 + m2 + m3 + M4 + M5 + M6 + M7 + m8 + M9 + M10 + M11 + D) + "Day");
Break
Default
Console.WriteLine ("You entered the wrong!") ");
Break
}

Second, the judgement leap year, the ordinary years, is a multiple of 4 but not a multiple of 100; the World Memorial is a multiple of 400 (year%4==0&&year%100!=0) | | Year%100==0
Console.Write ("Please enter the Year:");
int year = Int. Parse (Console.ReadLine ());
if (year >= 0 && year <= 9999)
{
If ((year% 4 = = 0 && year%! = 0) | | year% 100 = = 0)
{
Console.WriteLine ("You are entering a leap year. ");
}
Else
{
Console.WriteLine ("You entered the common year. ");
}
}
Else
{
Console.WriteLine ("You entered the wrong year!") ");
}

Enter a year between any 0--9999, enter the correct date correctly, and finally output the date correctly, otherwise the input format is incorrect.

Console.Write ("Please enter the Year:");
int y = Int. Parse (Console.ReadLine ());
Console.Write ("Please enter the month:");
int m = Int. Parse (Console.ReadLine ());
Console.Write ("Please enter the date:");
int d = Int. Parse (Console.ReadLine ());
if (y >= 0 && y <= 9999)
{

if (M >= 1 && m <= 12)
{
if (m = = 1 | | m = = 3 | | m = = 5 | | m = = 7 | | m = = 8 | | m = = | | m = = 12)
{

if (d >= 1 && d <= 31)
{
Console.Write ("You entered is" + y + "year" + M + "month" + D + "number");
}
Else
{
Console.WriteLine ("The number of formats you entered is incorrect.) ");
}
}
else if (m = = 4 | | m = = 6 | | m = = 9 | | m = = 11)
{

if (d >= 1 && d <= 30)
{
Console.Write ("You entered is" + y + "year" + M + "month" + D + "number");
}
Else
{
Console.WriteLine ("The number of formats you entered is incorrect.) ");
}
}
else//m==2
{
if (y% 4 = = 0 && y% = 0) | | y% 100 = 0)
{

if (d >= 1 && d <= 29)
{
Console.Write ("You entered is" + y + "year" + M + "month" + D + "number");
}
Else
{
Console.WriteLine ("The number of formats you entered is incorrect.) ");
}
}
Else
{

if (d >= 1 && d <= 28)
{
Console.Write ("You entered is" + y + "year" + M + "month" + D + "number");
}
Else
{
Console.WriteLine ("The number of formats you entered is incorrect.) ");
}
}
}
}
Else
{
Console.WriteLine ("The Month format you entered is wrong. ");
}
}
Else
{
Console.WriteLine ("You have entered a wrong year format. ");
}

Switch Structure 2016/03/08