课堂练习----找水王

#include "stdafx.h"
#include<iostream.h>
#include "stdlib.h"
int curId=0; 
int count=0; 
void FindId(int arr[],int n) 
{ 
    for (int i=0;i<n;i++)   
    {   
        if (count==0)  
        {   
            count++;
            curId=arr[i];
        }   
        else  
        {   
            if(curId==arr[i]) 
                count++;   
            else         
                count--;  
        }   
    }   
}   
int main() 
{ 
    int n;  
    int * arr=new int[n]; 
    cout<<"请输入总的帖子数:"; 
    cin>>n; 
    cout<<"请输入每个水军的ID:"<<endl; 
    for(int i=0;i<n;i++) 
    { 
        cin>>arr[i]; 
    } 
    FindId(arr,n); 
    cout<<"水王的ID是:"<<curId<<endl;; 
    return 0;
}