Enter the year, month, and day to determine the day of the year. You can also further judge the day of the year.

// Enter the year, month, and day to determine the day of the year. You can also further judge the day of the year.
# Include <iostream>
Using namespace STD;
Int main ()
{
Int Day (int x, int y, int R );
Int calculate_1 (int x, int y, int R );
Int calculate_2 (int n );
Int N, Y, R; /***************************************, month, day, very obvious **/
Int X; /*************************************** ****************** determine the symbol of a leap year, X = 1 is a leap year, x = 0 is not a leap year **/
Char; /*************************************** ****************** user input, determine whether to further **/
Cout <"enter" <Endl <"year, month, and day :";
Cin> N> Y> r;
While (n <= 0 | n> = 10000) /*************************************** * ** determine whether the year is correct **/
{
Cout <"Exceeds my computing range. Enter 1 ~ Year between 9999 "<'\ 001'
<"Enter the year again :";
Cin> N;
}
If (n % 4 = 0 & N % 100! = 0) | n % 400 = 0) /******************************* determine whether it is a leap year **/
X = 1;
Else x = 0;
While (Y> 12 | Y <1) /*************************************** * ******* determine whether the month is correct **/
{
Cout <"Are you kidding me with a month like this ??? "<Endl
<"Give you another chance to enter a month :";
Cin> Y;
}
While (Day (X, Y, R) = 0)
{
Cout <"the input date is incorrect, right? Enter a new date: "<Endl;
Cin> r;
}
Cout <"the date you entered is:" <n <'.' <Y <'.' <r <'.' <Endl;
Cout <"the date you entered is the day of the year" <calculate_1 (X, Y, R) <"day. "<Endl;/************* computing _ 1 */
Cout <"does it calculate the day from the first day of the first year of the current year for you ??? "<'(' <" Y/N "<')';
Cin>;
Int B = 1;
While (! = 'Y' &! = 'Y' &! = 'N' &! = 'N ')
{
Cout <"Hey! How do I enter it? Enter again :";
Cin>;
+ + B;
If (B = 5)
{
Cout <"my question is: do you calculate the day from the first day of the first year of the year ??? "<'(' <" Y/N "<')' <'\ a' <Endl;
B = 0;
}
}
If (A = 'y' | A = 'y ')
Cout <calculate_2 (n) + calculate_1 (X, Y, R) <Endl; /*************************************** * ************************** computing _ 2 */
Else cout <"well" <'\ 002' <Endl;
Return 0;
}
Int Day (int x, int y, int R) /*************************************** * *********************** judge whether the day is correct **/
{
Switch (y)
{
Case 2:
{
If (x = 1)
{
If (r> 0 & R <= 29)
Return 1;
Else return 0;
}
Else
{
If (r> 0 & R <29)
Return 1;
Else return 0;
}
}
Case 4: Case 6: Case 9: Case 11:
{
If (r> 0 & R <31)
Return 1;
Else return 0;
}
Default:
{
If (r> 0 & R <= 31)
Return 1;
Else return 0;
}
}
}
Int calculate_1 (int x, int y, int R)
{
Int A, B;
If (x = 1)
A = 29;
Else A = 28;
Switch (y)
{
Case 1: {B = r; return B ;}
Case 2: {B = 31 + R; return B ;}
Case 3: {B = 31 + A + R; return B ;}
Case 4: {B = 31 + A + 31 + R; return B ;}
Case 5: {B = 31 + A + 31 + 30 + R; return B ;}
Case 6: {B = 31 + A + 31 + 30 + 31 + R; return B ;}
Case 7: {B = 31 + A + 31 + 30 + 31 + 30 + R; return B ;}
Case 8: {B = 31 + A + 31 + 30 + 31 + 30 + 31 + R; return B ;}
Case 9: {B = 31 + A + 31 + 30 + 31 + 30 + 31 + 31 + 31 + R; return B ;}
Case 10: {B = 31 + A + 31 + 30 + 31 + 30 + 31 + 31 + 31 + 30 + R; return B ;}
Case 11: {B = 31 + A + 31 + 30 + 31 + 30 + 31 + 31 + 31 + 30 + 31 + 31 + R; return B ;}
Case 12: {B = 31 + A + 31 + 30 + 31 + 30 + 31 + 31 + 31 + 30 + 31 + 31 + 30 + R; return B ;}
}
}
Int calculate_2 (int n)
{
Int A = 0;
For (INT I = 1; I <= N; ++ I)
{
If (I % 4 = 0 & I % 100! = 0) | I % 400 = 0)
++;
}
Return (n-1) * 365 +;


}