arrover1.cpp

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++语言中的面向对象机制为主。学习者在学习过程中可以通过大量的程序实例和相关练习

// arrover1.cpp
// creates safe array (index values are checked before access)
// uses separate put and get functions
#include <iostream>
using namespace std;
#include <process.h>                  // for exit()
const int LIMIT = 100;
////////////////////////////////////////////////////////////////
class safearay
   {
   private:
      int arr[LIMIT];
   public:
      void putel(int n, int elvalue)  //set value of element
         {
         if( n< 0 || n>=LIMIT )
            { cout << "\nIndex out of bounds"; exit(1); }
         arr[n] = elvalue;
         }
      int getel(int n) const          //get value of element
         {
         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.putel(j, j*10);

   for(j=0; j<LIMIT; j++)      // display elements
      {
      int temp = sa1.getel(j);
      cout << "Element " << j << " is " << temp << endl;
      }
   return 0;
   }