forum

home / developersection / forums / how can i calculate someone's age based on a datetime type birthday?

Ask Question

How can I calculate someone's age based on a DateTime type birthday?

Steilla Mitchel 479 12-Jul-2023

How can I calculate someone's age based on a DateTime type birthday?

c# c#  datetime 
Updated on 13-Jul-2023
Steilla Mitchel

Student

I completed my post-graduation in 2013 in the engineering field. Engineering is the application of science and math to solve problems. Engineers figure out how things work and find practical uses for scientific discoveries. Scientists and inventors often get the credit for innovations that advance the human condition, but it is engineers who are instrumental in making those innovations available to the world. I love pet animals such as dogs, cats, etc.

Follow
Can you answer this question?
Answer

1 Answers

Aryan Kumar

Aryan Kumar

13-Jul-2023

Sure, here is how you can calculate someone's age based on a DateTime type birthday in C#:

C#

DateTime today = DateTime.Now;
DateTime birthday = new DateTime(1990, 1, 1);

int age = (today.Year - birthday.Year);

// If today is before the birthday, then subtract 1 from the age.
if (today < birthday)
{
    age--;
}

Console.WriteLine("The person is {0} years old.", age);

This code first creates two DateTime objects: today and birthday. The today object represents the current date and time, and the birthday object represents the person's birthday.

The code then calculates the person's age by subtracting the birthday object from the today object. The year property of the DateTime object is used to get the year of the date.

The code then checks if the today object is before the birthday object. If it is, then the code subtracts 1 from the age. This is because the person is not yet born on the day before their birthday.

Finally, the code prints the person's age to the console.

Here is an explanation of the code:

  • The DateTime.Now property is used to get the current date and time.
  • The new DateTime() constructor is used to create a DateTime object with a specific date and time.
  • The Year property is used to get the year of a DateTime object.
  • The - operator is used to subtract two DateTime objects.
  • The if statement is used to check if the today object is before the birthday object.
  • The Console.WriteLine() method is used to print a string to the console.
advertising
advertising

Liked By

We use cookies to ensure you have the best browsing experience on our website. By using our site, you acknowledge that you have read and understood our Cookie Policy & Privacy Policy