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C++ Coding Exception - Exercise

Coding Exceptions

Objective:Recode any one of the stack class constructors so it throws exceptions for as many conditions that you think are reasonable.


Here is the ch_stack class code. Choose one of the constructors and recode it so it throws the appropriate exceptions. Catch each exception with an appropriate action.

#include <iostream.h>
#include <string.h>
#include <assert.h>

//ch_stack implementation with constructor.
class ch_stack {
//the public interface for the ADT ch_stack
   ch_stack(int size, const char str[]);
   ch_stack(const char* c);
   explicit ch_stack(int size);
   void  reset() { top = EMPTY; }
   void  push(char c) {
      assert(top != FULL);
      s[top] = c;
   char  pop() {
      assert(top!= EMPTY);
      return s[top--];
   char  top_of() {
      assert(top!= EMPTY);
      return s[top];
   int  empty() const
     { return (top == EMPTY); }
   int  full() const
     { return (top == max_len - 1); }
   enum  { EMPTY = -1, FULL = 101 };
   char*  s;    //changed from s[max_len]
   int    max_len;
   int    top;

This code is also available in a file named ch_stack.cpp, which can be found in the compressed course download file available on the Resources page.
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