2017-2-23 C#基础 中间变量

用中间变量做这个题

1、“请输入年份：”（1-9999）
“请输入月份：”（1-12）
“请输入日期：”（要判断大小月，判断闰年）
判断输入的时间日期是否正确

2、计算输入的时间是当前这一年的第几天

namespace _2017_2_23判断日期格式优化代码
{class Program{static void Main(string[] args){bool dateISOK = false;bool isRN = false;{int year; int month = 0; int day = 0;int num=0;Console.WriteLine("请输入年份：（1-9999）");year = Convert.ToInt32(Console.ReadLine());if (year >= 1 && year <= 9999){if (year >= 1 && year <= 9999 && year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {isRN = true;}Console.WriteLine("请输入月份：");month = Convert.ToInt32(Console.ReadLine());if (month >= 1 && month <= 12){Console.WriteLine("请输入日期：");day = Convert.ToInt32(Console.ReadLine());if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12 && day >= 1 && day<= 31){Console.WriteLine("您输入的日期格式正确");dateISOK = true;}else if ((month == 4 || month == 6 || month == 9 || month == 11) && day >= 1 && day <= 30){Console.WriteLine("您输入的日期格式正确");dateISOK = true;}else if (isRN==true && month == 2 && day >= 1 && day <= 29){Console.WriteLine("您输入的日期格式正确");dateISOK = true;isRN = true;}else if (isRN==false && month == 2 && day >= 1 && day <= 28){Console.WriteLine("您输入的日期格式正确");dateISOK = true;}else{Console.WriteLine("您输入的日期格式不对");}}else{Console.WriteLine("您输入的月份格式错误");}}else{Console.WriteLine("您输入的年份格式错了");}if(dateISOK==true&&month==1){num = day;}if(dateISOK==true&&month==2){num = 31 + day;}if(dateISOK==true&&month==3&&isRN==true){num = 31 + 29 + day;}if(dateISOK==true&&month==3&&isRN==false){num = 31 + 28 + day;}if (dateISOK == true && month == 4 && isRN == true){num = 31 + 29 +31+ day;}if (dateISOK == true && month == 4 && isRN == false){num = 31 + 28+31 + day;}if (dateISOK == true && month == 5 && isRN == true){num = 31 + 29 + 31 +30+ day;}if (dateISOK == true && month ==5 && isRN == false){num = 31 + 28 + 31 +30+ day;}if (dateISOK == true && month == 6 && isRN == true){num = 31 + 29 + 31 + 30+31 + day;}if (dateISOK == true && month ==6 && isRN == false){num = 31 + 28 + 31 + 30+31 + day;}if (dateISOK == true && month == 7 && isRN == true){num = 31 + 29 + 31 + 30 + 31+30 + day;}if (dateISOK == true && month == 7 && isRN == false){num = 31 + 28 + 31 + 30 + 31+30 + day;}if (dateISOK == true && month == 8 && isRN == true){num = 31 + 29 + 31 + 30 + 31 + 30 +31+ day;}if (dateISOK == true && month == 8 && isRN == false){num = 31 + 28 + 31 + 30 + 31 + 30+31 + day;}if (dateISOK == true && month == 9 && isRN == true){num = 31 + 29 + 31 + 30 + 31 + 30 + 31+31 + day;}if (dateISOK == true && month ==9&& isRN == false){num = 31 + 28 + 31 + 30 + 31 + 30 + 31 +31+ day;}if (dateISOK == true && month == 10 && isRN == true){num = 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31+30 + day;}if (dateISOK == true && month == 10 && isRN == false){num = 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31+30 + day;}if (dateISOK == true && month == 11 && isRN == true){num = 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 +31+ day;}if (dateISOK == true && month == 11 && isRN == false){num = 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 +31+ day;}if (dateISOK == true && month == 12 && isRN == true){num = 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 +30+ day;}if (dateISOK == true && month == 12&& isRN == false){num = 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 +30+ day;}
                 Console.WriteLine("你输入的日期是当年的第"+num+"天");Console.ReadLine();}}}
}