C++ Recursion Sort

This code for sorting an array using recursion function
cpp code

#include<iostream.h>
int MAX(int a,int b)
{
   if(a>b)
	   return a;
	   return b;
		 
}
int MAX(int a[],int SIZE )
{
	if(SIZE==1)return a[0];
	return MAX(a[SIZE-1],MAX(a,SIZE-1));
}
int[] Sort(int a[],int Size)
{
	int temp;
    temp=a[0]
	a[0]=MAX(a,Size);



	 


	

}
void main()
{
 
	int a[6]={6,5,4,3,78,7};
	cout<<Sort(a,6)<<endl;



}