시간 계산기

' Excel VBA 함수로 총 시간 계산
Function CalculateTotalHours(startDate As Date, endDate As Date, dailyHours As Double) As Double
    Dim days As Long
    days = DateDiff("d", startDate, endDate) + 1
    CalculateTotalHours = days * dailyHours
End Function

' 사용 예:
' =CalculateTotalHours(A1, B1, C1)

from datetime import datetime, timedelta

def calculate_total_hours(start_date, end_date, daily_hours):
    date_format = "%Y-%m-%d"
    start = datetime.strptime(start_date, date_format)
    end = datetime.strptime(end_date, date_format)
    days = (end - start).days + 1
    return days * daily_hours

## 사용 예:
start_date = "2023-01-01"
end_date = "2023-01-10"
daily_hours = 8

total_hours = calculate_total_hours(start_date, end_date, daily_hours)
print(f"총 시간: {total_hours:.2f}")

function calculateTotalHours(startDate, endDate, dailyHours) {
  const start = new Date(startDate);
  const end = new Date(endDate);
  const days = (end - start) / (1000 * 60 * 60 * 24) + 1;
  return days * dailyHours;
}

// 사용 예:
const startDate = '2023-01-01';
const endDate = '2023-01-10';
const dailyHours = 8;

const totalHours = calculateTotalHours(startDate, endDate, dailyHours);
console.log(`총 시간: ${totalHours.toFixed(2)}`);

import java.time.LocalDate;
import java.time.temporal.ChronoUnit;

public class HourCalculator {
    public static double calculateTotalHours(LocalDate startDate, LocalDate endDate, double dailyHours) {
        long days = ChronoUnit.DAYS.between(startDate, endDate) + 1;
        return days * dailyHours;
    }

    public static void main(String[] args) {
        LocalDate startDate = LocalDate.of(2023, 1, 1);
        LocalDate endDate = LocalDate.of(2023, 1, 10);
        double dailyHours = 8.0;

        double totalHours = calculateTotalHours(startDate, endDate, dailyHours);
        System.out.printf("총 시간: %.2f%n", totalHours);
    }
}

calculate_total_hours <- function(start_date, end_date, daily_hours) {
  start <- as.Date(start_date)
  end <- as.Date(end_date)
  days <- as.numeric(difftime(end, start, units = "days")) + 1
  total_hours <- days * daily_hours
  return(total_hours)
}

## 사용 예:
start_date <- "2023-01-01"
end_date <- "2023-01-10"
daily_hours <- 8

total_hours <- calculate_total_hours(start_date, end_date, daily_hours)
cat(sprintf("총 시간: %.2f\n", total_hours))

function totalHours = calculateTotalHours(startDate, endDate, dailyHours)
    startDateNum = datenum(startDate);
    endDateNum = datenum(endDate);
    days = endDateNum - startDateNum + 1;
    totalHours = days * dailyHours;
end

% 사용 예:
startDate = '2023-01-01';
endDate = '2023-01-10';
dailyHours = 8;

totalHours = calculateTotalHours(startDate, endDate, dailyHours);
fprintf('총 시간: %.2f\n', totalHours);

#include <iostream>
#include <ctime>
#include <string>
#include <iomanip>

double calculateTotalHours(const std::string& startDate, const std::string& endDate, double dailyHours) {
    std::tm start = {}, end = {};
    std::istringstream ss_start(startDate);
    std::istringstream ss_end(endDate);
    ss_start >> std::get_time(&start, "%Y-%m-%d");
    ss_end >> std::get_time(&end, "%Y-%m-%d");
    
    std::time_t start_time = std::mktime(&start);
    std::time_t end_time = std::mktime(&end);
    
    double days = std::difftime(end_time, start_time) / (60 * 60 * 24) + 1;
    return days * dailyHours;
}

int main() {
    std::string startDate = "2023-01-01";
    std::string endDate = "2023-01-10";
    double dailyHours = 8.0;
    
    double totalHours = calculateTotalHours(startDate, endDate, dailyHours);
    std::cout << "총 시간: " << std::fixed << std::setprecision(2) << totalHours << std::endl;
    
    return 0;
}

require 'date'

def calculate_total_hours(start_date, end_date, daily_hours)
  start = Date.parse(start_date)
  end_date = Date.parse(end_date)
  days = (end_date - start).to_i + 1
  days * daily_hours
end

## 사용 예:
start_date = "2023-01-01"
end_date = "2023-01-10"
daily_hours = 8

total_hours = calculate_total_hours(start_date, end_date, daily_hours)
puts "총 시간: #{total_hours.round(2)}"

<?php

function calculateTotalHours($startDate, $endDate, $dailyHours) {
    $start = new DateTime($startDate);
    $end = new DateTime($endDate);
    $days = $end->diff($start)->days + 1;
    return $days * $dailyHours;
}

// 사용 예:
$startDate = '2023-01-01';
$endDate = '2023-01-10';
$dailyHours = 8;

$totalHours = calculateTotalHours($startDate, $endDate, $dailyHours);
echo "총 시간: " . number_format($totalHours, 2);

?>

use chrono::NaiveDate;

fn calculate_total_hours(start_date: &str, end_date: &str, daily_hours: f64) -> f64 {
    let start = NaiveDate::parse_from_str(start_date, "%Y-%m-%d").unwrap();
    let end = NaiveDate::parse_from_str(end_date, "%Y-%m-%d").unwrap();
    let days = (end - start).num_days() + 1;
    days as f64 * daily_hours
}

fn main() {
    let start_date = "2023-01-01";
    let end_date = "2023-01-10";
    let daily_hours = 8.0;

    let total_hours = calculate_total_hours(start_date, end_date, daily_hours);
    println!("총 시간: {:.2}", total_hours);
}

using System;

class HourCalculator
{
    static double CalculateTotalHours(DateTime startDate, DateTime endDate, double dailyHours)
    {
        int days = (endDate - startDate).Days + 1;
        return days * dailyHours;
    }

    static void Main()
    {
        DateTime startDate = new DateTime(2023, 1, 1);
        DateTime endDate = new DateTime(2023, 1, 10);
        double dailyHours = 8.0;

        double totalHours = CalculateTotalHours(startDate, endDate, dailyHours);
        Console.WriteLine($"총 시간: {totalHours:F2}");
    }
}

package main

import (
    "fmt"
    "time"
)

func calculateTotalHours(startDate, endDate string, dailyHours float64) float64 {
    start, _ := time.Parse("2006-01-02", startDate)
    end, _ := time.Parse("2006-01-02", endDate)
    days := end.Sub(start).Hours()/24 + 1
    return days * dailyHours
}

func main() {
    startDate := "2023-01-01"
    endDate := "2023-01-10"
    dailyHours := 8.0

    totalHours := calculateTotalHours(startDate, endDate, dailyHours)
    fmt.Printf("총 시간: %.2f\n", totalHours)
}

import Foundation

func calculateTotalHours(startDate: String, endDate: String, dailyHours: Double) -> Double {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "yyyy-MM-dd"
    
    guard let start = dateFormatter.date(from: startDate),
          let end = dateFormatter.date(from: endDate) else {
        return 0
    }
    
    let days = Calendar.current.dateComponents([.day], from: start, to: end).day! + 1
    return Double(days) * dailyHours
}

// 사용 예:
let startDate = "2023-01-01"
let endDate = "2023-01-10"
let dailyHours = 8.0

let totalHours = calculateTotalHours(startDate: startDate, endDate: endDate, dailyHours: dailyHours)
print(String(format: "총 시간: %.2f", totalHours))

-- 총 시간을 계산하기 위한 SQL 함수
CREATE FUNCTION calculate_total_hours(
    start_date DATE,
    end_date DATE,
    daily_hours DECIMAL(5,2)
) RETURNS DECIMAL(10,2) AS $$
BEGIN
    RETURN (end_date - start_date + 1) * daily_hours;
END;
$$ LANGUAGE plpgsql;

-- 사용 예:
SELECT calculate_total_hours('2023-01-01', '2023-01-10', 8.0) AS total_hours;