输入字符串和一个整数，结束不了循环

循环结束不了，一直在输入。poj1001

#include 
#include 
#include 

using namespace std;
int main()
{
    char s[199]={'\0'};

    int n=0,x=0;

while(scanf("%s%d", s, &n) == 2) {

    x=0;
    int di = 1, num = 0;
    int a[1000000];
    a[0] = 1;
    int t;
    int nn[100];
    int id = 0;
    int count = 0, f = 0;
    for (int i = 0; i < strlen(s); ++i) {
        if (f) {
            id++;
        }
        if (s[i] == '.') {
            f = 1;
        } else {
            a[count++] = int(s[i] - '0');
        }

    }
    int sq = strlen(s) - 2;
    for (int i = 0; i < strlen(s) - 1; ++i) {
        x += a[sq--] * powf(10, i);
    }
    id *= n;
    a[0] = 1;
    while (n--) {
        for (int j = 0; j < di; ++j) {
            t = a[j] * x + num;
            a[j] = t % 10;
            num = t / 10;
        }
        while (num) {
            a[di++] = num % 10;
            num /= 10;
        }
    }
    int j = 1;
    if (di <= id) {
        cout << ".";
        for (int i = 0; i < id - di; ++i) {
            cout << "0";
        }
    }
    int hhh=0;
    for (int i = 0; i < di-1; ++i) {
        if(a[i]==0){
            hhh++;
        }
        else break;
    }
    for (int i = di - 1; i >= hhh+0; --i) {

        if (j == di - id + 1) {
            cout << ".";
        }
        j++;
        cout << a[i];
    }
    cout << endl;

}
    return 0;
}

你这个输入应该是&s啊