关于while(cin>>value)怎么停

一开始搞来搞去发现总是没办法显示最后一个数的time，然后现在的代码是输入数字回车，显示除了最后一个其余数字的出现次数，之后按Ctrl+Z，再按回车（跳出while循环），就会显示按任意键继续，就可以执行下面的代码了。

#include<iostream>
using namespace std;
int main(){
int currVal = 0, val = 0;
int cnt = 0;
if (cin >> currVal){
cnt = 1;
cout << "开始" << endl;
while (cin >> val){
if (val == currVal)
{
++cnt;
cout << "计数" << endl;
}
else
{
cout << currVal << " occurs " << cnt << " times " << endl;
currVal = val;
cnt = 1;
cout << "换数"<< endl;
}
}

cout << currVal << " occurs " << cnt << " times " << endl;
}
system("PAUSE");
cout << "end" << endl;
system("PAUSE");
return 0;

}