fork download
copy 
  1.  
  2. namespace test
  3. {
  4.     using System;
  5.     class Program
  6.     {
  7.         static void Main(string[] args)
  8.         {
  9.  
  10.  
  11. int a, b;
  12.   a = 100;
  13.   b = -9990;
  14. int c;
  15.   DateTime dt = DateTime.Now;
  16.   for (int i = 0; i < 10000000; i++)
  17.   {
  18.   a = a + b;
  19.   b = a - b;
  20.   a = a - b;
  21.   }
  22.   int time1 = (DateTime.Now - dt).Milliseconds;
  23.   dt = DateTime.Now;
  24.   for (int i = 0; i < 10000000; i++)
  25.   {
  26.   c= a;
  27.   a = b;
  28.  b = c;
  29.   }
  30.   int time2 = (DateTime.Now - dt).Milliseconds;
  31. dt = DateTime.Now;// 你漏了这一行了
  32.   for (int i = 0; i < 10000000; i++)
  33.   {
  34.   b = a + 0 * (a = b);
  35.   }
  36.   int time3 = (DateTime.Now - dt).Milliseconds;
  37.   Console.WriteLine(time1);
  38.   Console.WriteLine(time2);  
  39.   Console.WriteLine(time3);
  40.   Console.ReadLine();
  41.  
  42.         }
  43.     }
  44. }
Success #stdin #stdout 0.11s 37000KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
29
34
9
https://ideone.com/GB2n3
language:
C# (gmcs 5.20.1)
created:
13 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!