using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace _004
{
class Program
{
static void Main(string[] args)
{
#region //讀取用戶輸入
//string str = Console.ReadLine(); //讀取用戶輸入的信息,回車結束,讀取的是一行,我們可以直接用來給string 變量賦值,不可以定義其他類型的變量
//Console.WriteLine("用戶輸入的是:" + str);
//string num1 = Console.ReadLine();
//int _num1 = Convert.ToInt32(num1);//Convert 類裏面有一些轉換的方法,我們可以使用 用來轉換數據類型,ToInt32是轉換爲int類型
//string num2 = Console.ReadLine();
//double _num2 = Convert.ToDouble(num2); //Todouble是將字符串轉換爲double類型
//Console.WriteLine("用戶輸入的是:" + num2+",它的平方是 "+(_num2*_num2));
//Console.ReadKey();
#endregion
#region//練習1:讓用戶輸入三個數,打印三個數的積
//string num1 = Console.ReadLine();
//double _num1 = Convert.ToDouble(num1);
//string num2 = Console.ReadLine();
//double _num2 = Convert.ToDouble(num2);
//string num3 = Console.ReadLine();
//double _num3 = Convert.ToDouble(num3);
//Console.WriteLine("三個數的積是:" + (_num1 * _num2 * _num3));
#endregion
#region//練習2:計算半徑爲3的圓的半徑和麪積,並打印出來
double r = 3.0;
double Pi = Math.PI;
double c = 2 * r * Pi;
double s = Pi * r * r;
Console.WriteLine("圓的周長爲:" + c + ",圓的面積是:" + s);
#endregion
#region//練習3:某遊戲商店裏,綠寶石的價格爲120個遊戲幣,血瓶的價格爲35個遊戲幣,問買3個血瓶和2個綠寶石花費多少遊戲幣,情人節打8.8折之後呢?
double l = 120.0;
double x = 35.0;
double t = 3 * x + l * 2;
double z = (3 * x + l * 2) * 0.88;
Console.WriteLine("價格爲:{0},情人節打8.8折後的價格爲:{1}", t, z);
#endregion
#region//練習4:編程實現計算幾天是幾周零幾天
//int day = 55;
//int w = 55 / 7;
//int d = 55 % 7;
//Console.WriteLine("{0}是{1}周零{2}天。", day, w, d);
#endregion
#region//練習5:編程實現,用戶輸入多少秒,然後程序轉換爲幾天幾小時幾分鐘幾秒
string str = Console.ReadLine();
int sec = Convert.ToInt32(str);
int day = sec / (60 * 60 * 24);
int sec1 = sec % (60 * 60 * 24);
int hour = sec1 / (60 * 60);
int sec2 = sec1 % (60 * 60);
int min = sec2 / 60;
int sec3 = sec2 % 60;
Console.WriteLine("{0}秒轉換爲{1}天{2}小時{3}分鐘{4}秒。", sec, day, hour, min, sec3);
#endregion
Console.ReadKey();
}
}
}
運算符的練習,自主完成,歡迎糾錯!明天會將運算符的筆記整理髮布,歡迎各位發表意見!