优质代码

标签：c++   c   

<pre name="code" class="cpp">/*************************************************************************
	> File Name: 三种进制输出
	> Author: kanejzh
	> Mail: jingzhanghao@gmail.com 
	> Created Time: Sun 03 May 2015 09:13:35 AM CST
 ************************************************************************/
static const char hexconv[] = "0123456789abcdef";
static const char binconv[] = "01";

/*---------------------------------------------------------------------------*/
void
putstring(char *s)
{
  while(*s) {
    putchar(*s++);
  }
}
/*---------------------------------------------------------------------------*/
void
puthex(uint8_t c)
{
  putchar(hexconv[c >> 4]);
  putchar(hexconv[c & 0x0f]);
}
/*---------------------------------------------------------------------------*/
void
putbin(uint8_t c)
{
  unsigned char i = 0x80;
  while(i) {
    putchar(binconv[(c & i) != 0]);
    i >>= 1;
  }
}
/*---------------------------------------------------------------------------*/
/*************************************************************************
	> File Name: 判断当天是当年第几周的第几天
	> Author: kanejzh
	> Mail: jingzhanghao@gmail.com 
	> Created Time: Sun 03 May 2015 09:13:35 AM CST
 ************************************************************************/
#include<stdlib.h>
#include<stdio.h>
#include<time.h>
static bool is_leap(int n){
    return (n%400==0)||(n%4==0&&n%100!=0);
}
static int get_xth_day_of_date(int year, int month, int day){
    int a[] = {0, 31, 0, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
    int d = day;
    a[2] = is_leap(year) ? 29 : 28;
    for ( int i=1; i<month; ++i ){
        d += a[i];
    }
    return d;
}
static int get_xday_of_date(int year, int month, int day){
    // 1900-01-01: Monday
    int d = 0, i, t;
    for ( i=1900; i<year; ++i ){
        d += is_leap(i) ? 366 : 365;
    }
    d += get_xth_day_of_date(year, month, day);
    t = d%7;
    return t ? t : 7;
}
static int get_xweek_of_date(int year, int month, int day){
    int first_monday_th, day_th;
    int t, i;
    for ( i=1; i<=7; ++i ){
        t = get_xday_of_date(2012, 1, i);
        if ( t == 1 ){
            break;
        }
    }
    first_monday_th = i;
    day_th = get_xth_day_of_date(year, month, day);
    if ( first_monday_th == 1 ){
        return (day_th-first_monday_th)/7+1;
    }
    else {
        if ( day_th < first_monday_th ){
            return 1;
        }
        else {
            return (day_th-first_monday_th)/7+2;
        }
    }
}
void print_xth_week_xth_day(int year, int month, int day){
    printf("%d-%d-%d 第%d周第%d天\n", year, month, day, get_xweek_of_date(year, month, day), get_xday_of_date(year, month, day));
}
struct tm *get_date_of_today(){
    time_t nowTime;
    time(&nowTime);
    struct tm *sysTime = localtime(&nowTime);
    sysTime->tm_year += 1900;
    sysTime->tm_mon += 1;
   
    return sysTime;
}
int main(){
    struct tm *sysTime = get_date_of_today();
    print_xth_week_xth_day(sysTime->tm_year, sysTime->tm_mon, sysTime->tm_mday);
    return 0;
}

优质代码

标签：c++   c   

原文地址：http://blog.csdn.net/jzh1988903/article/details/45739935