两个有序数组求交集,C++

//两个有序数组求交集（数组从大到小排序）
#include <iostream>
using namespace std;
int getInter(int *arr1, int n1, int *arr2, int n2, int *Inter) 
{ 
int i = 0; 
int j = 0; 
int k = 0; 
while(i < n1 && j < n2) 
{ 
if(arr1[i] == arr2[j]) 
{     Inter[k++] = arr1[i] ;  i++;j++;} 
else if(arr1[i] < arr2[j]) 
{ 
i++; 
} 
else 
j++; 
} 
if(k > 0) 
return 1; 
else 
return 0; 
} 

void main()
{
int arr1[]={1,3,4,5,6};
int n1=sizeof(arr1)/sizeof(int);
int arr2[]={3,5,7,9};