change upper half c[4][4] with lower half e[4][4] using fun.

//W.P to change upper half of D[4][4] with the lower half of E[4][4] Use "function" statement.
#include<iostream>
using namespace std;
void print_array(int a[][4],int x,int y)
{
    for(int i=0;i<x;i++)
    {
        for(int j=0;j<y;j++)
        {
            cout<<a[i][j]<<"\t";
        }
        cout<<endl<<endl;
    }
    cout<<"------------------------------------\n";
}
void change(int a[][4],int x,int y,int b[][4],int r,int c)
{   int k[4][4],i,j;
    for(i=0;i<x-2;i++)
    {
        for(j=0;j<y;j++)
        {
            k[i][j]=a[i][j];
            a[i][j]=b[i+2][j];
            b[i+2][j]=k[i][j];
        }
    }
}
int main()
{
    int c[4][4],e[4][4],i,j;
    cout<<"Input for c[][] array\n";
    for(i=0;i<4;i++)
    {
        for(j=0;j<4;j++)
        {
            cout<<"["<<i<<"]["<<j<<"]";
            cin>>c[i][j];
        }
    }
    cout<<"\nInput for E[][] array\n";
    for(i=0;i<4;i++)
    {
        for(j=0;j<4;j++)
        {
            cout<<"["<<i<<"]["<<j<<"]";
            cin>>e[i][j];
        }
    }
    print_array(c,4,4);
    print_array(e,4,4);
    change(c,4,4,e,4,4);
    print_array(c,4,4);
    print_array(e,4,4);
}