_beginthread multithreading magic with args

#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
#include <process.h>
#include <iostream>

typedef struct {
    int data1;
    int data2;
} t;

void ThreadFunc(void* data) {
  // Do stuff.  This will be the first function called on the new thread.
  // When this function returns, the thread goes away.  See MSDN for more details.
  int j = 0;
  t *args = (t*) data;
  j = args->data2;
  int k = args->data1;
  if (k == -1) printf("+");
  while (j < 1000) {
    printf("(%d) ", j);
    j++;
  }
}

int main() {
    int i = 0;
    while (i < 5) {
        printf("C");
        i++;
    }
    int amount = 2;
    t arg;
    arg.data1 = -1;
    arg.data2 = 7;
  HANDLE thread = (HANDLE)_beginthread(&ThreadFunc, 0, (void*) &arg);
  if (thread) {
    // Optionally do stuff, such as wait on the thread.
  }
  i = 0;
  while (i < 100) {
    printf("%d ", i);
    i++;
  }
}