输入日期为 dd-mm-yy 并显示日期为 1999 年 1 月 3 日的 C 程序

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#include <stdio.h>
#include <time.h>

int main()
{
   struct tm tm_info;
   char buffer[255];
   char days[32][5] = {" ","1st", "2nd", "3rd", "4th", "5th", "6th", "7th", "8th", "9th", "10th", "11th", "12th", "13th", "14th", "15th", "16th", "17th", "18th", "19th", "20th","21st","22nd","23rd","24th","25th","26th","27th","28th","29th","30th","31st"};

    strptime("09-07-2017", "%d-%m-%Y ", &tm_info);
    strftime(buffer, 26, "%B", &tm_info);
    printf("%s ",buffer);

    strftime(buffer, 26, "%d", &tm_info);
    int day = int(buffer[0]-'0')*10 + int(buffer[1]-'0');
    printf("%s, ",days[day]);

    strftime(buffer, 26, "%Y", &tm_info);
    printf("%s ",buffer);
}