learning c++

learning.cpp

#include <iostream>
using namespace std;

typedef struct record{
   int key;
   int data;
} record;

record* new_record() {
  record *ret;
  ret = (record *) malloc(sizeof(record));
  return ret;
}

record** new_record_array(int len) {
  int i = 0;
  record** my_list = (record**) malloc(len * sizeof(record));
  for (i=0; i < 10; i++) {
    my_list[i] = new_record();
    my_list[i]->key = i + 100;
  }
  return my_list;
}

int main() {
  record *rec = new_record();
  record **arr= new_record_array(10);
  int i = 0;
  for (i=0; i < 10; i++) {
    cout << arr[i]->key << "\n";
  }
  (*rec).key = 30;
  (*rec).data = 25;
  cout << rec->data;
  cout << arr[0]->key;
  cout << "test";
}