78 lines
1.4 KiB
C++
78 lines
1.4 KiB
C++
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// Step 1: Create the stack class.
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// Step 2: Declare the constructor and destructor in the class
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// Step 3: Stack constructor definition.
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// Step 4: Stack destructor definition.
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// Step 5: Create the objects for the class stack. Objects automatically call the constructor for object initialization.
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// Step 6: Before program termination destructors are automatically called by compiler. It destroys the objects in memory.
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#include<iostream.h>
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#define SIZE 100
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class stack
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{
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int stck[SIZE];
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int tos;
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public:
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stack(); //constructor
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~stack(); //destructor
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void push(int i);
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int pop();
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};
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//stack’s constructor function
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stack :: stack()
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{
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tos=0;
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cout<<”Stack Initialized\n”;
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}
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//stacks destructor function
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stack :: ~stack()
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{
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cout<<”\Stack Destroyed”;
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}
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void stack :: push(int i)
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{
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if(tos==SIZE)
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{
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cout<<”Stack is full.\n”;
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return;
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}
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stck[tos] = i;
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tos++;
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}
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int stack :: pop ()
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{
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if(tos==0)
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{
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cout<<”Stack underflow.\n”;
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return;
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}
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tos--;
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return stck[tos];
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}
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int main()
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{
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stack a,b;
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a. push(1);
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b. push(2);
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a. push(3);
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b. push(4);
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cout<<a.pop()<< “ “;
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cout<<a.pop()<< “ “;
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cout<<b.pop()<< ” “;
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cout<<b.pop()<<”\n”;
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return 0;
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}
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