Convert C++ Code to C

This is my Code C++ for my assignment. Please help me to convert it to C code. Thank you!

#include<iostream>
using namespace std;
#define N 10

int main()
{
    int array[N],p,q;
    for(int i=0;i<N;i++)
      array[i]=i;
    cout<<"For instance, given elements are ";
    for(int i=0;i<N;i++)
      cout<<array[i];
    cout<<endl;
    int r=0;
    while(cin>>p)
    {
     cin>>q;
     if(p>=0 && p<N)
   {
    for(int i=0;i<N;i++)
     if(array[i]==p)
       array[i]=q;
      cout<<p<<" "<<q<<"  "<<r++<<"     ";
      for(int i=0;i<N;i++)
        cout<<array[i];
      cout<<"\n";
   }
  }
}