有关程序计时方法的介绍

				#include 
				#include 
				
				int main()
				{
					int lst = time(0), now;
					for(int k = 0; k < 10; ++k)
					{
						while((now = time(0)) == lst);
						printf("Last = %12i\tNow = %12i\tDiff = %12i\n", lst, now, now - lst);
						lst = now;
					}
					return 0;
				}