计算工作日

.net

static void Main(string[] args)
{
    DateTime sdt = DateTime.Now;
    DateTime edt = new DateTime(2016, 2, 7);

    int d = (edt - sdt).Days;

    int wd = 0;
    while(sdt < edt)
    {
        sdt = sdt.AddDays(1);
        if (sdt.DayOfWeek != DayOfWeek.Saturday && sdt.DayOfWeek != DayOfWeek.Sunday)
        {
            ++wd;
        }
    }

    Console.WriteLine(d.ToString());
    Console.WriteLine(wd.ToString());
    Console.ReadLine();
}

c++

#include "stdafx.h"
#include "time.h"

int main()
{
    time_t st;
    time(&st);

    struct tm tmp = { 0 };
    tmp.tm_year = 2016 -  1900;
    tmp.tm_mon = 2 - 1;
    tmp.tm_mday = 7;
    time_t et = mktime(&tmp);

    double d = difftime(et, st) / (60 * 60 * 24);

    int i = 0, wd = 0;
    struct tm _tm;
    time_t _t;
    while ( i < d) {
        i++;
        _t = st + (60 * 60 * 24 * i);
        gmtime_s(&_tm, &_t);

        if (_tm.tm_wday != 5 && _tm.tm_wday != 6) {
            ++wd;
        }
    }

    printf("%.f\n", d);
    printf("%d\n", wd);
    scanf_s("");
}

java

public static void main(String[] args) throws Exception {
    Date sdt = new Date();
    Date edt = new SimpleDateFormat("yyyy-MM-dd").parse("2016-2-7 00:00:00");
    
    Calendar scal = Calendar.getInstance();
    scal.setTime(sdt);
    Calendar ecal = Calendar.getInstance();
    ecal.setTime(edt);
    
    long d = (ecal.getTimeInMillis() - scal.getTimeInMillis()) / (60 * 60 * 24 * 1000);
    
    int wd = 0;
    while(scal.getTimeInMillis() < ecal.getTimeInMillis()) {
        scal.add(Calendar.DAY_OF_MONTH, 1);
        if(scal.get(Calendar.DAY_OF_WEEK) != Calendar.SATURDAY 
                && scal.get(Calendar.DAY_OF_WEEK) != Calendar.SUNDAY) {
            ++wd;
        }
    }
    
    System.out.println(d);
    System.out.println(wd);
}

js

<script type="text/javascript">
    function init() {
        var sdt = new Date();
        var edt = new Date('2016-2-7'.replace(/-/g, '/'));
        var d = parseInt((edt - sdt) / (60 * 60 * 24 * 1000));

        var wd = 0;
        while (sdt < edt) {
            var timestamp = Date.parse(sdt) + (60 * 60 * 24 * 1000);
            sdt = new Date(timestamp);
            
            if (sdt.getDay() != 5 && sdt.getDay() != 6) {
                ++wd;
            }
        }
        alert(d);
        alert(wd);
    }
</script>

 php

<?php
    date_default_timezone_set("PRC");
    
    $sdt = time();
    $edt = mktime(0, 0, 0, 2, 7, 2016);
    
    $d = ($edt - $sdt) / (60 * 60 * 24);
    
    $wd = 0;
    while($sdt < $edt) {
        $sdt += (60 * 60 * 24 * 1);
        $week = date("N", $sdt);
        
        if($week != 5 && $week != 6) {
            $wd++;
        }
    }
    
    echo sprintf("%d\n", $d);
    echo $wd;
?>