使用array对象（而不是数组）和long double（而

#include<iostream>
#include<array>
using namespace std;
int main()
{
 array<long double, 101>factorials;
 factorials[0] = factorials[1] = 1;
 cout<< "0!=" << factorials[0] << endl;
 cout << "1!=" << factorials[1] << endl;
 for (int i = 2; i < 101; i++)
 {
  factorials[i] = i * factorials[i - 1];
  cout << i << "!=" << factorials[i] << endl;
 }
   return 0;
}

#include <iostream>
#include <array>
using namespace std;

int main()
{
    array<long double,101>factorials;
    factorials[1]=factorials[0]=1;
    for(int i=2;i<factorials.size();i++)
        factorials[i]=i*factorials[i-1];
    for(int i=0;i<factorials.size();i++)
        cout<<i<<"!="<<factorials[i]<<endl;
    system("pause");
    return 0;
}