C++,解一元二次方程

 

 

#include 
#include 
#include 
#include 
using namespace std;

void main()
{
	const char* filename = "c:/解方程程序结果.txt";
	ofstream ofile(filename);
	if(!ofile.is_open())
	{
		std::cerr << "Error opening file";
        exit(EXIT_FAILURE);
	}

	int y;
	cout<<"输入Y:";
	cin>>y;	
    ofile<<"输入y: "<