How to calculate the time difference in C ?,

How to calculate the time difference in C ?,

In C #, how to calculate the difference between the two periods. Calculate the difference between two times, which can be calculated to the hour, minute, and second!

<1>
Label1.Text = "15:36:05 ";
Label2.Text = "20:16:35 ";
DateTime d1 = new DateTime );
DateTime d2 = new DateTime );

TimeSpan d3 = d2.Subtract (d1 );

Label3.Text = "difference :"
+ D3.Days. ToString () + "day"
+ D3.Hours. ToString () + "hour"
+ D3.Minutes. ToString () + "Minute"
+ D3.Seconds. ToString () + "seconds ";


<2>
Protected void Page_Load (object sender, EventArgs e)
{
If (! IsPostBack)
{
DateTime dt1 = Convert. ToDateTime ("00:00:00 ");
DateTime dt2 = Convert. ToDateTime ("00:00:00 ");
This. Label1.Text = this. DateDiff (dt1, dt2 );
}
}
Private string DateDiff (DateTime DateTime1, DateTime DateTime2)
{
String dateDiff = null;
Try
{
TimeSpan ts1 = new TimeSpan (DateTime1.Ticks );
TimeSpan ts2 = new TimeSpan (DateTime2.Ticks );
TimeSpan ts = ts1.Subtract (ts2). Duration ();
DateDiff = ts. days. toString () + "day" + ts. hours. toString () + "Hour" + ts. minutes. toString () + "Minute" + ts. seconds. toString () + "seconds ";
}
Catch
{}
Return dateDiff;
}

<3>
String st1 = "14: 16 ";
String st2 = "14:14 ";
DateTime dt1 = Convert. ToDateTime (st1 );
DateTime dt2 = Convert. ToDateTime (st2 );

Int result = DateTime. Compare (dt1, dt2 );
If the time of st1 is greater than st2, result = 1
If they are equal to 0,
If the value is smaller than-1

In the C language, what is the symbol (->) and how to use it?

This is a symbol in the struct pointer. Write a program to explain it, for example:
# Include <stdio. h>
Struct STU // define a struct
{
Int num;
} Stu;
Int main ()
{
Struct STU * p; // defines a struct pointer.
P = stu; // p points to the struct variable stu.
Stu. num = 100; // attaches an initial value to the struct member num.
Printf ("% d", p-> num); // output the num value in stu
Return;
}
As you can see, the-> method is to reference the variable in the struct !!
Format: p-> struct member (such as p-> num)
The function is equivalent to stu. num or (* p). num.
I don't know. You don't understand, and don't understand call me. O (∩ _ ∩) O ~
Hope to adopt it.

In the C language, what is the symbol (->) and how to use it?

This is a symbol in the struct pointer. Write a program to explain it, for example:
# Include <stdio. h>
Struct STU // define a struct
{
Int num;
} Stu;
Int main ()
{
Struct STU * p; // defines a struct pointer.
P = stu; // p points to the struct variable stu.
Stu. num = 100; // attaches an initial value to the struct member num.
Printf ("% d", p-> num); // output the num value in stu
Return;
}
As you can see, the-> method is to reference the variable in the struct !!
Format: p-> struct member (such as p-> num)
The function is equivalent to stu. num or (* p). num.
I don't know. You don't understand, and don't understand call me. O (∩ _ ∩) O ~
Hope to adopt it.