Стек (связный список). Нужно ли проверять на пустоту?

#include "stdafx.h"
 
struct STACK
{
    float Value;
    STACK *Link;
};
 
 struct Using_Stack
 {
    STACK *New_Var;
    void (*Init)(Using_Stack*);
    void (*Push)(Using_Stack*, float );
    float (*Pop)(Using_Stack*);
 };
 
/* INITIALIZATION */
void MyInit( Using_Stack* MyStack )
{
    MyStack->New_Var = 0;
}
 
/* PUSH */
void MyPush( Using_Stack* MyStack, float Value )
{
    STACK *New_El;
 
    New_El = new STACK;
    New_El -> Value = Value;
    New_El -> Link = MyStack -> New_Var;
    MyStack -> New_Var = New_El;
}
 
/* POP */
float MyPop( Using_Stack* MyStack )
{
    float Reading;
    if (MyStack -> New_Var == 0)
            Reading = 0;
    else
        {
            STACK *Del;
            Del = MyStack -> New_Var;
            Reading = Del -> Value;
            MyStack -> New_Var = MyStack -> New_Var -> Link;
            delete Del;
        }
    return Reading;
}
 
void main()
{
    Using_Stack *MyStack;
    MyStack = new Using_Stack;
 
    MyStack -> Init = MyInit;
    MyStack -> Push = MyPush;
    MyStack -> Pop = MyPop;
 
    MyStack -> Init(MyStack);   //Initialization of Value
 
    float Character;
 
    MyStack -> Push(MyStack, 10.5);     //Recording of Value
    MyStack -> Push(MyStack, 20.5);
 
    printf("Our Stack is");
    printf("\n\n%g", MyStack -> New_Var -> Value);
    printf("\n\n%g", MyStack -> New_Var -> Link -> Value);
    
    printf("\n\n Enter the value you want to ADD \n");
    scanf_s("%g", &Character);
    MyStack -> Push (MyStack, Character);
 
    printf("\n\n So, our Stack is");
    printf("\n\n %g", MyStack -> New_Var -> Value);
    printf("\n %g", MyStack -> New_Var -> Link -> Value);
    printf("\n %g \n", MyStack -> New_Var -> Link -> Link -> Value);
 
    printf ("\n And now we will DELETE value, which we added \n");
    float Read;
    Read = MyStack -> Pop(MyStack);     //Reading of one value
    
    printf("\n Value which we will DELETE is - ");
    printf("%g \n", Read);
 
    printf("\n And now, our Stack is");
    printf("\n\n %g", MyStack -> New_Var -> Value);
    printf("\n %g \n\n\n", MyStack -> New_Var -> Link -> Value);
    
}