using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApplication3
{
class Program
{
static void Main(string[] args)
{
////运算符
////++ --
//int a = 0;
//int b = a++;//int b=a;a=a+1;
//int c = ++a;//a=a+1;int c=a;
////++a;//a=a+1;
//Console.WriteLine(b);
//Console.WriteLine(c);
//Console.ReadLine();
//* / %
//double a = 47;
//bool b = a % 10 == 7;
//Console.WriteLine();
//Console.ReadLine();
//+ -
//注意加号在遇到字符串类型的时候表示的是拼接作用
//关系运算符
//> < >= <=
//== !=
//int a = 7;
//int b = 8;
//bool c = a >= b;
//逻辑运算符
//&& 与 两边都要成立
//|| 或 只需要有一个成立
//! 非 取原本的反方向
//int a = 4; int b = 5; int c = 6;
//bool d = a > b || c >= b;
//条件运算符
//?:
//int e = a <= b ? 1 : 2;
//赋值运算符
//= += -= *= /= %=
//a += b;//a=a+b;
//a *= b;//a=a*b;
//Console.WriteLine(a);
//Console.ReadLine();
//问,现在几点了?
//若是12小时之内,am
//若是13——24之间是,pm。若是下午需要减掉12进行报时
Console.Write("现在几点了?");
int hour = int.Parse(Console.ReadLine());
string mm = hour > 12 ? (hour-12)+"pm" : hour+"am";
Console.WriteLine("现在是"+mm);
Console.ReadLine();
}
}
}