What kind of code is this? C or C++ [closed] - c++

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I have written some code for my own practice purpose, but interesting thing happened. I was originally trying to write a C++ code, however I forgot include streamio library and using namespace std, then I just using printf() function all the way during my coding.
I think the most confusing part to me is I use .cpp extension and compile this program using VS 2015 compiler but I actually wrote in C style. Could someone tell me do I wrote a C or C++ code?
Here is the source code:
#include "stdafx.h"
#include <stdlib.h>
typedef struct node
{
int data;
node *next;
}node;
node *create()
{
int i = 0;
// Each variable must be assign to some value in the function
node *head, *p, *q = NULL;
int x = 0;
head = (node *)malloc(sizeof(node));
while (1)
{
printf("Please input the data: ");
scanf_s("%d", &x);
if (x == 0)
break;
p = (node *)malloc(sizeof(node));
p->data = x;
if (++i == 1) {
head->next = p;
}
else
{
q->next = p;
}
q = p;
}
q->next = NULL;
return head;
}
void printList(node head)
{
node *tmp = &head;
int counter = 0;
printf("Print out the list: \n");
while (tmp->next != NULL) {
tmp = tmp->next;
counter++;
//surprise to me printf() is pretty advance...
printf("%d item in the list: %d\n",counter, tmp->data);
}
}
int main()
{
printList(*create());
return 0;
}

Answer 1

Your code is, as far as I can tell, valid C++. It is not valid C, but could be made valid C with only a little effort.
C is nearly a subset of C++, but there is valid C code that is not valid C++ code -- and of course there's plenty of valid C++ code that's not valid C code.
The one thing that makes your code invalid as C is the use of the name node:
typedef struct node
{
int data;
node *next;
}node;
In C++, the struct node definition makes the type visible either as struct node or as node. In C, the struct definition by itself only creates the name struct node. The name node is not visible until the typedef is complete -- which it isn't at the point where you define node *next;.
If you rename your source file with a .c suffix and compile it as C, the compiler will complain that node is an unknown type name.