not able to call my header file

[Punit Jain]

hii i m not able to call my header file MYSTACK.H
here is my code:

mystack.h

#include <stdio.h> #define SIZE 5 #define OK 0 #define OVERFLOW 1 #define UNDERFLOW 2 class CStack { private: int nElements[SIZE]; int nTop; int nStatus; public: CStack(); void Push(int nElement); int Pop(); int IsEmpty(); int IsFull(); int GetStatus(); void Display(); ~CStack(); }; CStack::CStack() { nTop=-1; nStatus=OK; } int CStack::IsFull() { return (nTop==SIZE-1)?1:0; } int CStack::IsEmpty() { return (nTop==-1)?1:0; } int CStack::GetStatus() { return nStatus;} void CStack::Push(int nElement) { if(IsFull()==1){ nStatus=OVERFLOW; return; } nTop++; nElements[nTop]=nElement; nStatus=OK; } int CStack::Pop() { if(IsEmpty()==1){ nStatus=UNDERFLOW; return -1;} int nVal=nElements[nTop]; nTop--; nStatus=OK; return nVal; } void CStack::Display() { for(int i=0; i<=nTop; i++) printf("\n%d ", nElements[i]); printf("\n"); }

Here i m calling it...

#include<stdio.h> #include<conio.h> #include "MYSTACK.H" int main() { int choice; Cstack stack; printf("Enter your choice \n 1.> Push \n 2.> Pop \n "); scanf("%d",&choice); switch(choice) { case 1: { if(stack.IsFull()) { printf("Stack is full");} else{ int n; printf("Enter element"); scanf("%d",&n); stack.Push(n);} } case 2: { if(stack.IsEmpty()){ printf("stack is empty"); } else{ stack.Pop(); printf("element is deleted"); } } } return 0; }

Both of my files are in same directory..

i m getting error:

'Cstack' undeclared (first use this function)..
and few more..

[Stephan van Hulst]

Well, you have nothing called 'Cstack' declared in your header file.

[Punit Jain]

ahhh okay..
thanks..
and i m still getting one error:

[Linker error] undefined reference to `CStack::~CStack()'

[Anand Hariharan]

Your class declares a destructor but does not define it.

Remove or comment line 22 in your header file. Or replace it with

~CStack() {}