24.cpp

经典C语言程序设计100例1-10 如【程序1】 题目：有1、2、3、4个数字

/*---------------------------------------例题24-------------------------------------------------------------------*/

#include <iostream>

using namespace std;

int main()
{
	int numerator = 2;//分子
	int denominator = 1;//分母
	double sum = 0;
	for(int i = 0; i<20; i ++)
	{
		sum += double(numerator * 1.0/denominator);
		numerator = numerator + denominator;
		denominator = numerator - denominator;
	}
	cout<<"The summation of the number is:  "<<sum<<endl;
	return 0;
}