给定当前日期和出生日期，找出当前年龄。 例如：
null
Input : Birth date = 07/09/1996 Present date = 07/12/2017Output : Present Age = Years: 21 Months: 3 Days: 0t Age = Years: 7 Months: 11 Days: 21
在计算两个日期的差异时，我们只需要跟踪两种情况即可。
- 如果当前日期小于出生日期，则不计算该月，对于减去日期，我们将当前日期加上月天数，以获得日期的差异。
- 如果当前月份小于出生月份，则不考虑当前年份，因为今年尚未完成，为了获得月份差，我们在当前月份加上12。
- 最后，我们只需要减去天数、月份和年份，就可以得到这两个条件处理后的差值。
以下是上述方法的实施情况：
C++
// c program for age calculator #include <stdio.h> #include <stdlib.h> // function to calculate current age void findAge( int current_date, int current_month, int current_year, int birth_date, int birth_month, int birth_year) { // days of every month int month[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; // if birth date is greater then current birth // month then do not count this month and add 30 // to the date so as to subtract the date and // get the remaining days if (birth_date > current_date) { current_date = current_date + month[birth_month - 1]; current_month = current_month - 1; } // if birth month exceeds current month, then do // not count this year and add 12 to the month so // that we can subtract and find out the difference if (birth_month > current_month) { current_year = current_year - 1; current_month = current_month + 12; } // calculate date, month, year int calculated_date = current_date - birth_date; int calculated_month = current_month - birth_month; int calculated_year = current_year - birth_year; // print the present age printf ( "Present AgeYears: %d Months: %d Days:" " %d" , calculated_year, calculated_month, calculated_date); } // driver code to check the above function int main() { // current dd// mm/yyyy int current_date = 7; int current_month = 12; int current_year = 2017; // birth dd// mm// yyyy int birth_date = 16; int birth_month = 12; int birth_year = 2009; // function call to print age findAge(current_date, current_month, current_year, birth_date, birth_month, birth_year); return 0; } |
JAVA
// Java program for age calculator import java.io.*; class GFG { static void findAge( int current_date, int current_month, int current_year, int birth_date, int birth_month, int birth_year) { int month[] = { 31 , 28 , 31 , 30 , 31 , 30 , 31 , 31 , 30 , 31 , 30 , 31 }; // if birth date is greater then current // birth_month, then donot count this month // and add 30 to the date so as to subtract // the date and get the remaining days if (birth_date > current_date) { current_month = current_month - 1 ; current_date = current_date + month[birth_month - 1 ]; } // if birth month exceeds current month, // then do not count this year and add // 12 to the month so that we can subtract // and find out the difference if (birth_month > current_month) { current_year = current_year - 1 ; current_month = current_month + 12 ; } // calculate date, month, year int calculated_date = current_date - birth_date; int calculated_month = current_month - birth_month; int calculated_year = current_year - birth_year; // print the present age System.out.println( "Present Age" ); System.out.println( "Years: " + calculated_year + " Months: " + calculated_month + " Days: " + calculated_date); } public static void main(String[] args) { // present date int current_date = 7 ; int current_month = 12 ; int current_year = 2017 ; // birth dd// mm// yyyy int birth_date = 16 ; int birth_month = 12 ; int birth_year = 2009 ; // function call to print age findAge(current_date, current_month, current_year, birth_date, birth_month, birth_year); } } |
python
# Python program to calculate range def findAge(current_date, current_month, current_year, birth_date, birth_month, birth_year): # if birth date is greater then current birth_month # then donot count this month and add 30 to the date so # as to subtract the date and get the remaining days month = [ 31 , 28 , 31 , 30 , 31 , 30 , 31 , 31 , 30 , 31 , 30 , 31 ] if (birth_date > current_date): current_month = current_month - 1 current_date = current_date + month[birth_month - 1 ] # if birth month exceeds current month, then # donot count this year and add 12 to the # month so that we can subtract and find out # the difference if (birth_month > current_month): current_year = current_year - 1 ; current_month = current_month + 12 ; # calculate date, month, year calculated_date = current_date - birth_date; calculated_month = current_month - birth_month; calculated_year = current_year - birth_year; # print present age print "Present Age" print ( "Years:" , calculated_year, "Months:" , calculated_month, "Days:" , calculated_date) # driver code current_date = 7 current_month = 12 current_year = 2017 # birth dd//mm//yyyy birth_date = 16 birth_month = 12 birth_year = 2009 findAge(current_date, current_month, current_year, birth_date, birth_month, birth_year) |
C#
// C# program for age calculator using System; class GFG { static void findAge( int current_date, int current_month, int current_year, int birth_date, int birth_month, int birth_year) { int []month = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; // if birth date is greater then // current birth_month, then donot // count this month and add 30 to the // date so as to subtract the date and // get the remaining days if (birth_date > current_date) { current_month = current_month - 1; current_date = current_date + month[birth_month - 1]; } // if birth month exceeds current month, // then do not count this year and add // 12 to the month so that we can // subtract and find out the difference if (birth_month > current_month) { current_year = current_year - 1; current_month = current_month + 12; } // calculate date, month, year int calculated_date = current_date - birth_date; int calculated_month = current_month - birth_month; int calculated_year = current_year - birth_year; // print the present age Console.WriteLine( "Present Age" ); Console.WriteLine( "Years: " + calculated_year + " Months: " + calculated_month + " Days: " + calculated_date); } // driver code to check the above function public static void Main() { // present date int current_date = 7; int current_month = 12; int current_year = 2017; // birth dd// mm// yyyy int birth_date = 16; int birth_month = 12; int birth_year = 2009; // function call to print age findAge(current_date, current_month, current_year, birth_date, birth_month, birth_year); } } //This code is contributed by vt_m. |
PHP
<?php // PHP program for // age calculator // function to calculate // current age function findAge(int $current_date , int $current_month , int $current_year , int $birth_date , int $birth_month , int $birth_year ) { // days of every month $month = array (31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 ); // if birth date is greater // then current birth month // then do not count this // month and add 30 to the // date so as to subtract // the date and get the // remaining days if ( $birth_date > $current_date ) { $current_date = $current_date + $month [ $birth_month - 1]; $current_month = $current_month - 1; } // if birth month exceeds // current month, then do // not count this year and // add 12 to the month so // that we can subtract and // find out the difference if ( $birth_month > $current_month ) { $current_year = $current_year - 1; $current_month = $current_month + 12; } // calculate date, month, year $calculated_date = $current_date - $birth_date ; $calculated_month = $current_month - $birth_month ; $calculated_year = $current_year - $birth_year ; // print the present age echo "Present AgeYears:" , $calculated_year , " " , "Months:" , $calculated_month , " " , "Days:" , $calculated_date ; } // Driver Code // current dd// mm/yyyy $current_date = 7; $current_month = 12; $current_year = 2017; // birth dd// mm// yyyy $birth_date = 16; $birth_month = 12; $birth_year = 2009; // function call to print age findAge( $current_date , $current_month , $current_year , $birth_date , $birth_month , $birth_year ); // This code is contributed by anuj_67. ?> |
Javascript
<script> // Javascript program for age calculator // function to calculate current age function findAge(current_date, current_month, current_year, birth_date, birth_month, birth_year) { // days of every month month = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 ] // if birth date is greater then current birth // month then do not count this month and add 30 // to the date so as to subtract the date and // get the remaining days if (birth_date > current_date) { current_date = current_date + month[birth_month - 1]; current_month = current_month - 1; } // if birth month exceeds current month, then do // not count this year and add 12 to the month so // that we can subtract and find out the difference if (birth_month > current_month) { current_year = current_year - 1; current_month = current_month + 12; } // calculate date, month, year var calculated_date = current_date - birth_date; var calculated_month = current_month - birth_month; var calculated_year = current_year - birth_year; // print the present age document.write( "Present Age<br>Years: " +(calculated_year)+ " " ); document.write( "Months: " +calculated_month+ " " ); document.write( "Days: " +calculated_date+ " " ); } // driver code to check the above function // current dd// mm/yyyy var current_date = 7; var current_month = 12; var current_year = 2017; // birth dd// mm// yyyy var birth_date = 16; var birth_month = 12; var birth_year = 2009; // function call to print age findAge(current_date, current_month, current_year, birth_date, birth_month, birth_year); </script> |
输出：
Present AgeYears: 7 Months: 11 Days: 22
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