[intv] Stack implementation in C++

--Makefile--
CC=g++
COPTS = -g 
DEPENDS= stack.o
CFLAGS= $(COPTS) $(DEFINES)

all: stack main

stack: stack.cpp stack.h
	$(CC) $(CFLAGS) -c $@.cpp $(LIBS)

main: stack
	$(CC) $(CFLAGS) -o $@  $@.cpp $(DEPENDS)

clean:
	rm *.o *~ main

--Makefile--


--stack.h--
#ifndef STACK_H
#define STACK_H
#include <iostream>

const int MAXSTACKSIZE = 4;

class stack{
 private:
  int stacklist[MAXSTACKSIZE];
  int top;
 public:
  stack(void);
  void push(int Item);
  int pop(void);
  int peek(void);
  int isEmpty();
  int isFull();
};

#endif
--stack.h--

--stack.cpp--
#include <iostream>
#include "stack.h"
using namespace std;

stack::stack(){
  top = -1;
}

void stack::push(int Item){
  if (!isFull()){
    top++;
    stacklist[top] = Item;
  }else{
    cout << "Stack Overflow" << endl;
  }
}

int stack::pop(void){
  if (!isEmpty()){
    int tem;
    tem = stacklist[top];
    top--;
    return tem;
  }else{
    cout << "Stack Underflow" << endl;
  }
}

int stack::peek(void){
  if (!isEmpty()){
    return stacklist[top];
  }else{
    cout << "Attempt to peek into an empty stack" << endl;
  }
}

int stack::isEmpty(void){
  if (top == -1) return 1; else return 0;
}

int stack::isFull(void){
  if (top == (MAXSTACKSIZE-1)) return 1; else return 0;
}
--stack.cpp--

--main.cpp--
//Problem: Stack implementation

#include <iostream>
#include "stack.h"

using namespace std;

int main(){
  stack S;
  S.push(1);
  S.push(2);
  S.push(3);
  S.push(4);
  cout << S.peek() <<endl;
  cout << S.pop() << endl;
  cout << S.pop() << endl;


}