确保输出超大数不会出错的题解

// 同志们，有一个检测点是输入10000，所以要保证如果结果是一个超级超级超级长长长的数也不能出错！！！！！

#include <iostream>
using namespace std;

const int MAX_DIGITS = 10000;
int main() {
int n;
cin >> n;
int result[MAX_DIGITS] = {0};
result[0] = 66;
int size = 2;

if (n > 1) {
    for (int i = 0; i < n - 1; ++i) { 
        int carry = 0;
        for (int j = 0; j < size; ++j) {
            int product = result[j] * 2 + carry;
            result[j] = product % 10;
            carry = product / 10;
        }
        while (carry) {
            result[size++] = carry % 10;
            carry /= 10;
        }
    }
}

for (int i = size - 1; i >= 0; --i) {
    cout << result[i];
}
cout << endl;

return 0;

}