时间函数举例.cpp

使用时间函数举例,使用C++语言在VC环境中开发.

#include <iostream>
using namespace std;

#include <conio.h>
#include <time.h>

int main()
{
	cout << "\1\1这是一个测试您猜出正确数字所需时间的小小软件,您可以根据提示输入在1到100之间的数字"
		<< ",当您输入的数字不符合条件时,它会给您一个温馨提示,直到您输入正确为止."<<
		"系统会计算出你所用时间,好啦,准备好了吗?让我们开始吧!\1\1" << endl;
	clock_t start, finish;
	time_t begin, end;
	double var = 0;
	unsigned int i, guess;
	srand((unsigned)time(NULL));
	cout << "Do you want to play it.('y' or 'n'): ";
	char c;
	c = getchar();
	do
	{
		i = rand() % 100;
		cout << "You guess the number is: " << endl;
		start = clock();
		time( &begin );
		cin >> guess;
		while(guess != i)
		{
			if(guess > i)
			{
				cout << "Please input a bit smaller." << endl;
				cin >> guess;
			}
			else
			{
				cout << "Please input a bit bigger." << endl;
				cin >> guess;
			}
		}
		finish = clock();
		time( &end );
		var = (double)(finish - start) / CLOCKS_PER_SEC;
		cout << "It took you  " << var << " seconds" << endl;
		cout << "It took you  " << difftime(end, begin) << " seconds" << endl <<endl;
		int elapsed_time = difftime(end, begin);
		if(elapsed_time < 15)
			cout << "You are very clever!" <<endl << endl; 
		else if(elapsed_time < 25)
			cout << "You are normal!" << endl <<endl;
		else
			cout << "You are stupid!" << endl << endl;

		cout << "Congradulations!You have done it." << endl;
		cout << "The number you guess is  " << i <<endl;
		cout << "Now do you want to try it again?('y' or 'n')" << endl;
		c=getchar();
	}while((c=getchar())!='n');

	return 0;
}