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#include<iostream>
template<typename T>
void swap(T &x,T &y);
int main()
{
using namespace std;
int a=10,b=20;
swap(a,b);
cout<<"then now integer= "<<a<<" "<<b;
return 0;
}
void swap(T &x,T &y)
{
T temp;
temp=x;
x=y;
y=temp;
}
#include<iostream>
template<typename T>
void my_swap(T &x, T &y)
{
T temp;
temp = x;
x = y;
y = temp;
};
int main()
{
using namespace std;
int a = 10, b = 20;
my_swap(a, b);
cout << "then now integer= " << a << " " << b;
return 0;
}