C言語実装C++のようなVectorコンテナ

#include 
#include 
#include 

//=============================Starting to define my Array class=========================

//-----------------------------Declaration segment-------------------------
typedef int DataType;
typedef struct array{

DataType *Data;
int size,max_size;

void (*Input)(DataType , struct array *);
void (*Constructor)(struct array *);
void (*Destructor)(struct array *); 
}Array;

void Init(Array *this);
void _constructor(Array *this);
void _denstructor(Array *this);
void _input(DataType data, Array *this);

//------------------------------Implemen segment---------------------------

void _input(DataType data, Array *this)
{
int i;
DataType *ptr;

if(this->size >= this->max_size)
{
this->max_size +=10;
ptr=(DataType *)malloc(this->max_size*sizeof(DataType));

for(i=0;isize;i++)
ptr[i]=this->Data[i]; 

free(this->Data);
this->Data=ptr;
} 

this->Data[this->size]=data;
++(this->size); 
}


void _constructor(Array *this)
{
this->size=0;
this->max_size=10;
this->Data=(DataType *)malloc(this->max_size*sizeof(DataType));
}

void _denstructor(Array *this)
{
free(this->Data);
}


void Init(Array *this)
{
this->Input =_input;
this->Constructor =_constructor;
this->Destructor =_denstructor;

this->Constructor(this);
}

//===================================definition end===============================


//     
int main()
{
Array MyArray;
Init(&MyArray); //          ，        

MyArray.Input(1,&MyArray);
MyArray.Input(2,&MyArray);

printf("The elements of MyArray : %d,\t%d",MyArray.Data[0],MyArray.Data[1]);
getch();

MyArray.Destructor(&MyArray); //               

return 0;

}