C语言实现cal命令

C语言实现cal命令

/* Jan 26 2020 14:29 */#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include <windows.h>#define WEEKDAY 7
#define MONTHS 12typedef struct _Date
{int year;  // 当前的年份int month; // 当前的月份int mday;  // 当月的经过的天数
} Date;Date get_now_time();
int  is_leap_year(int year);
char *month_name(int n);
int  get_weekdays(int year);
void display_date(int year, int month, int day, int flag);
void set_color(int flag);
int get_days(int year, int month);
int get_month_weekdays(int year, int month);/* 获取当前时间 */
Date get_now_time()
{time_t now;struct tm *tp;Date now_time;time(&now);tp = localtime(&now);ar  = tp->tm_year + 1900;h = tp->tm_mon  + 1;now_time.mday  = tp->tm_mday;return now_time;
}/* 获取月份的名称 */
char *month_name(int n)
{static char *name[] = {"Illegal month",