C++_输入数据存到数组中

#include<iostream>
using namespace std;
char testprog[100];
int main()
{
    char ch;
    cout<<"please input test program:"<<endl;
    ch=getchar();
    int i=0;
    while(ch!='#'&&i<100)
    {
        testprog[i++]=ch;
        ch=getchar();
    }
    for(int j=0;j<sizeof(testprog)/sizeof(testprog[0]);j++)//C++中求数组长度
        cout<<testprog[j];
}