定义变量-递增

#include<iostream>
const unsigned int studenn = 29;
typedef unsigned int Unint;

using namespace std;
Unint number=10,maxnumber=0;
// number+=1;
 //   maxnumber=number*studenn;  不能在函数体外存放指令. 会出错
void main()
{  
         number+=1;
         maxnumber=number*studenn;
cout<<"number will ++ ,"
      <<number 
      <<endl
      <<"maxnumber is "
      <<maxnumber
      <<endl
      <<"hello world";
}