输入一个已经按升序排序过的数组和一个数字

void findTwoNum(int* arr,int n,int sum)
{
int low = 0;
int high = n-1;
while(low<=high)
{
if(arr[low]+arr[high]==sum)
{
printf("%d    %d\n",arr[low],arr[high]);
return ;
}
else if(arr[low]+arr[high]<sum)
{
low++;
}else
{
high--;
}

}
}