Problem with template

[krutuk]

The program is primitive, yet I still cann't find out mistake. Here the program is:

#include <iostream>

using namespace std;

template <class X> void swap(X &a, X &b)
{
  X temp;
  temp = a;
  a = b;
  b = temp;
}

int main()
{
  int i=10, j = 20;
  float x=10.1, у= 23.3;
  char a='x', b='z';
  
  cout << "Original i, j: " << i << ' ' << j << endl;
  cout << "Original x, y: " << x << ' ' << у << endl;
  cout << "Original a, b: " << a << ' ' << b << endl;
  swap(i, j);
  swap(x, у);
  swap(a, b);
  cout << "Swapped i, j : " << i << ' ' << j << endl;
  cout << "Swapped x, y: " << x << ' ' << у << endl;
  cout << "Swapped a, b: " << a << ' ' << b << endl;
  
  return 0;
}

[kbw]

What's wrong with it? The compiler must have said something.

We wouldn't expect to find these two together

#include <iostream.h>
using namespace std;

Did you mean this?

#include <iostream>
using namespace std;

[krutuk]

I am sorry about <iostream.h>. I did it like.

#include <iostream>
using namespace std;

The compiler sad:
22: error: call of overloaded 'swap(int&, int&)' is abiguous
23: error: call of overloaded 'swap(float&, float&)' is abiguous
24: error: call of overloaded 'swap(char&, char&)' is abiguous

[ne555]

Somehow `algorithm' gets included.
Use namespaces to resolve the ambiguity.

[krutuk]

Can you explain deeper? I'm sorry, but I didn't understand you.
Previously thanks!

[krutuk]

ne555, thanks man I understood and did it through namespace. It really halped.

[Lynx876]

Remove using namespace std;

And add std:: to cout etc. Works fine.

[krutuk]

No problem wasn't in cout.
I did like this:

#include <iostream>

using namespace std;

namespace Swap
{
template <class X> void swap(X &a, X &b)
{
  X temp;
  temp = a;
  a = b;
  b = temp;
}
}

int main()
{
  int i=10, j = 20;
  float x=10.1, у= 23.3;
  char a='x', b='z';
  
  cout << "Original i, j: " << i << ' ' << j << endl;
  cout << "Original x, y: " << x << ' ' << у << endl;
  cout << "Original a, b: " << a << ' ' << b << endl;
  Swap::swap(i, j);
  Swap::swap(x, у);
  Swap::swap(a, b);
  cout << "Swapped i, j : " << i << ' ' << j << endl;
  cout << "Swapped x, y: " << x << ' ' << у << endl;
  cout << "Swapped a, b: " << a << ' ' << b << endl;
  
  return 0;
}