Help in template

Hi,

Please see below a peice of code
Here I am getting an error as below
template.cpp:26: error: call of overloaded swap(int&, int&)â is ambiguous

I dont know what is the problem with swap?

If i define template as as template<class T> void swapa(T &a, T &b) It will work fine. Please help to resolve this.

Thanks
Manjunath

re: Help in template

Is there a function with the prototype swap(int&, int&) defined elsewhere in your code?

For instance have you included <algorithm>?

re: Help in template

I didn't include algorithm. I didn't define swap(int&, int&) too. If I define this one, it should work properly without any error as for as my knowledge.
Correct me if I am wrong.

Thanks,
Manjunath

re: Help in template

Well the compiler error means that you have attempted to call swap in a context where it has more than one option of which function to call and no way to resolve which one it should use perhaps you could post the code that is creating the error.

re: Help in template

Please go through the code and help me out in getting out of that error

#include<iostream>
using namespace std;

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


int main()
{
int a = 100, b = 200;
cout<<"Before swapping"<<endl;
cout<<"a = "<<a<<" "<<"b = "<<b<<endl;
swap(a, b);
cout<<"After swapping"<<endl;
cout<<"a = "<<a<<" "<<"b = "<<b<<endl;
return 0;
}

Thanks,
Manjunath

re: Help in template

main.cpp:18: error: call of overloaded `swap(int&, int&)' is ambiguous
main.cpp:5: error: candidates are: void swap(T&, T&) [with T = int]
/usr/include/c++/3.3.3/bits/stl_algobase.h:121: error: void
>std::swap(_Tp&, _Tp&) [with _Tp = int]

Because iostream included algorithm.
Either dump 'using namespace std' from your program, place your template in some other namespace or rename it.

re: Help in template

Ok Thanks for your help Banfa and newb16,

Now I understood whats the problem.

Thanks Once again,
--Manjunath