Swapping using references

#include<iostream>
using namespace std;
void swapr(int &,int &);
int main()
{
int i=10,j=30;
cout<<“intial values of i ,j = “<<i<<“\t”<<j<<endl;
swapr(i,j);
cout<<“final values of i,j= “<<i<<“\t” <<j<<endl;
return 0;
}
void swapr(int &i,int &j)
{
int t;
t=i;
i=j;
j=t;
}

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