如何让我的代码从出生日期计算年龄？

Posted 2023-02-25

【中文标题】如何让我的代码从出生日期计算年龄？

【英文标题】：How to do i get my code to calculate the age from birthdate?

【发布时间】：2018-01-31 02:11:01

【问题描述】：

namespace Computerization_of_Health_Records 
  public class HealthProfile 
    //auto implemented property Firstname implicitly creates an 
    //instance variable for the patients first name
    public string FirstName  get; set; 

    //auto implemented property Firstname implicitly creates an 
    //instance variable for the patients last name
    public string LastName  get; set; 

    //auto implemented property Gender implicitly creates an 
    //instance variable for the patients gender
    public string Gender  get; set; 

    //auto implemented property birthday implicitly creates an 
    //instance variable for the patients birth day
    public Int32 Birthday  get; set; 

    //auto implemented property height implicitly creates an 
    //instance variable for the patients height
    public string Height  get; set; 

    //auto implemented property weight implicitly creates an 
    //instance variable for the patients weight
    public string Weight  get; set; 

    public string maxHeartRate  get; set; 

    public string bmi  get; set; 

    public string Age  get; set; 


    //constructor to initialize first name, last name, gender, birthday, birth month,
    //Birth year, height and weight.
    public HealthProfile(string first, string last, string gender, Int32 birthday, string height, string weight, string maxHrtRate) 
      FirstName = first;
      LastName = last;
      Gender = gender;
      Birthday = birthday;
      Height = height;
      Weight = weight;
      maxHeartRate = maxHrtRate;
    
  

【问题讨论】：

什么是“TIA”？为什么有这么多与问题无关的代码？

问题中的任何代码与计算生日有什么关系？

你的生日变量是 Int32。除非其中至少包含时间跨度值，否则您将无法计算年龄。

您的代码中没有出生日期，并且您已经指定了年龄。请更正问题以使其合理并减少不需要的代码量。情况很混乱。

使用一些常识。如果您使用铅笔和纸手动计算某人的年龄，您将如何计算？弄清楚并写下步骤。然后将这些步骤转换为代码。如果您在将任何步骤转换为代码时遇到问题，请询问有关该步骤的问题。

【参考方案1】：

以 UTC 格式将出生日期传递给以下函数（因为它是标准日期格式）。

public static string GetAge(DateTime dob)

    DateTime todayDateUtc = DateTime.UtcNow;
    DateTime pastYearDate;
    int years = 0;
    string age;
    int days;

    if(DateTime.UtcNow > dob) 
        years = new DateTime(DateTime.UtcNow.Subtract(dob).Ticks).Year - 1;
    

    pastYearDate = dob.AddYears(years);
    days = todayDateUtc.Subtract(pastYearDate).Days;
    age = years + " years " + days + " days";

    return age;