20140610_KUAS_VisualC++_ChangeDating

/************************************/
/** 20140610 Change Dating         **/
/** Maker  : Yan                   **/
/** E-Mail : [email protected] **/
/** Date   : 2014/06/10 pm.01:59   **/
/************************************/

#include <stdio.h>
#include <stdlib.h>

void function(int, int, int);
void main()
{
    printf("Enter a date(yyyy/mm/dd): ");
    char input[10] = {EOF};
    scanf("%[^\n]", input);

    //check input of year
    int check_year = 0;
    int check_counter = 1000;
    for(int i = 0; i < 4; i++)
    {
        check_year += ((int)input[i] - 48) * check_counter;
        check_counter /= 10;
    }
    if(check_year <= 1911)
    {
        printf("Wrong input of year!\n\n");
        exit(1);
    }

    //adjust array element location
    if(input[7] != '/')
    {
        for(int i = 8; i > 4; i--)
        {
            input[i + 1] = input[i];
        }
        input[5] = '0';
    }
    if(input[9] == NULL)
    {
        input[9] = input[8];
        input[8] = '0';
    }

    int year = 0, month = 0, day = 0;
    int counter = 1000;
    for(int i = 0; i < 5; i++)
    {
        year += ((int)input[i] - 48) * counter;
        counter /= 10;
    }

    printf("Output(CNS 7648): ");

    year -= 1911;
    printf("民國");
    if(year > 999)
    {
        function(year, 1000, 0);
    }
    else if(year > 99)
    {
        function(year, 100, 0);
    }
    else if(year > 9)
    {
        function(year, 10, 0);
    }
    else if(year > 0)
    {
        function(year, 1, 0);
    }

    printf("年");
    month = ((int)input[5] - 48) * 10 + ((int)input[6] - 48) * 1;
    if(month > 9)
    {
        function(month, 10, 1);
    }
    else if(month > 0)
    {
        function(month, 1, 1);
    }
    printf("月");

    day = ((int)input[8] - 48) * 10 + ((int)input[9] - 48) * 1;
    if(day > 9)
    {
        function(day, 10, 1);
    }
    else if(day > 0)
    {
        function(day, 1, 1);
    }

    printf("日\n\n");
    system("pause");
    exit(1);
}

void function(int data, int counter, int select)
{
    int temp = data / counter;
    data -= (temp * counter);
    switch(temp)
    {
        case 0:
            printf("零");
            break;
        case 1:
            if((counter == 10) && (select == 1))
            {
                printf("十");
            }
            else
            {
                printf("一");
            }
            break;
        case 2:
            printf("二");
            break;
        case 3:
            printf("三");
            break;
        case 4:
            printf("四");
            break;
        case 5:
            printf("五");
            break;
        case 6:
            printf("六");
            break;
        case 7:
            printf("七");
            break;
        case 8:
            printf("八");
            break;
        case 9:
            printf("九");
            break;
    }
    if(counter == 1)
        return;
    counter = counter / 10;
    function(data, counter, select);
}