A.Eming（13.7.7）

A.Eming

   

   Eming is a contest hold by WHUACM trainingteam. The aim is to select new members of the team.

   Usually, the first problem is a very simpleproblem such as “a+b problem”. But this time, Xioumu is tired of this kind of problem,he decide to solve “a and b problem”.

   Give you the result of a + b and a^2 – b^2,please output the result of a and b.

 

   Input

   There are several test cases. For each casethere are two double numbers indicating a+b and a^2-b^2. You may assume that a+bwill not be zero.

 

   Output

   For each case please output the result of aand b in one line, rounded to 2 decimal places.

 

   SampleInput

   3 -3

 

   SampleOutput

   1.00 2.00

这个题目就是给了a,b的关系，求出a,b的值，通过简单的数学推导，就可以得到a,b的通式，然后用C++写出来，注意语法错误即可

代码：

#include
#include
using namespace std;
int main(){
	double c,d,a,b;
	while(cin>>c>>d){
		a=(d+c*c)/(2*c);
		b=c-a;
		cout<

输出是注意输出格式和保留小数个数，基本没什么问题