c++ 数字

#include <iostream>
using namespace std;

int main ()
{
   // 数字定义
   short  s;
   int    i;
   long   l;
   float  f;
   double d;

   // 数字赋值
   s = 10;
   i = 1000;
   l = 1000000;
   f = 230.47;
   d = 30949.374;

   // 数字输出
   cout << "short  s :" << s << endl;
   cout << "int    i :" << i << endl;
   cout << "long   l :" << l << endl;
   cout << "float  f :" << f << endl;
   cout << "double d :" << d << endl;

   return 0;

}

short  s :10
int    i :1000
long   l :1000000
float  f :230.47
double d :30949.4