найти два числа состовляющие разность и произведение

#include <iostream>
using namespace std;
 
int main()
{
int x,y,a,b;
cout << "Input value x and y(by space)" << endl;
cin >> x >> y;

#include <iostream>
using namespace std;
 
int main()
{
int x,y,a,b;
cout << "Input value x and y(by space)" << endl;
cin >> x >> y; 
if ((a==x*y)
cout << "Verno" << endl;
if ((b==x/y)
cout << "Verno" << endl;
else
cout << "Error" << endl;
return 0;
}

#include <stdio.h>
#include <conio.h>
#include <math.h>
 
int main()
{
clrscr();
int a,b;
printf("Input value for a(разность) and b(произведение)(by space)\n"
scanf("%d %d",a, b);

#include <iostream>
#include <cmath>
 
using std::cin;
using std::cout;
using std::endl;
 
int main()
{
  setlocale(LC_ALL,"Russian");
  float x1,x2,y1,y2,a,b,D;
  cout<<"Введите a: ";
  cin>>a;
  cout<<"Введите b: ";
  cin>>b;
  D=(a*a)+4*b;
  y1=(-a+sqrt(D))/2;
  y2=(-a-sqrt(D))/2;
  x1=a+y1;
  x2=a+y2;
  cout<<"x1="<<x1<<endl;
  cout<<"y1="<<y1<<endl;
  cout<<"x2="<<x2<<endl;
  cout<<"y2="<<y2<<endl;
  
 system("pause");
return 0;
}