arrover2.cpp

来自「本课程主要介绍面向对象程序设计的方法和c++语言的基本概念。以c++语言中的面向」· C++ 代码 · 共 36 行

// arrover2.cpp
// creates safe array (index values are checked before access)
// uses one access() function for both put and get
#include <iostream>
using namespace std;
#include <process.h>            //for exit()
const int LIMIT = 100;          //array size
////////////////////////////////////////////////////////////////
class safearay
   {
   private:
      int arr[LIMIT];
   public:
      int& access(int n)        //note: return by reference
         {
         if( n< 0 || n>=LIMIT )
            { cout << "\nIndex out of bounds"; exit(1); }
         return arr[n];
         }
   };
////////////////////////////////////////////////////////////////
int main()
   {
   safearay sa1;

   for(int j=0; j<LIMIT; j++)   //insert elements
      sa1.access(j) = j*10;     //*left* side of equal sign

   for(j=0; j<LIMIT; j++)       //display elements
      {
      int temp = sa1.access(j); //*right* side of equal sign
      cout << "Element " << j << " is " << temp << endl;
      }
   return 0;
   }