homework 3-3

// homework 3
// ex 3
#include <iostream>
#include <cmath>

using namespace std;

int main()
{
  double a;
  double b;
  double c;
  double f;

  cout << "first number ";
  cin >> a;

  cout << "second number ";
  cin >> b;

  cout << "another number ";
  cin >> c;

  cout << "and another number ";
  cin >> f;

  if ((a==c)&&(a==b)&&(a==f))
  {
      cout << "minimum number " << a << endl;
  }

  if ((a<b)&&(a<c)&&(a<f))
  {
      cout << "minimum number " << a << endl;
  }

  if ((b<a)&&(b<c)&&(b<f))
  {
      cout << "minimum number " << b << endl;
  }

  if ((c<a)&&(c<b)&&(c<f))
  {
      cout << "minimum number " << c << endl;
  }

  if ((f<a)&&(f<b)&&(f<c))
  {
      cout << "minimum number " << f << endl;
  }
}