C++: What is the difference between new and malloc?

1// new
2int* p1 = new int(10);  // Constructor called
3delete p1;
4
5int* arr1 = new int[5];
6delete[] arr1;
7
8// malloc
9#include <cstdlib>
10int* p2 = (int*)malloc(sizeof(int));  // No constructor
11free(p2);
12
13int* arr2 = (int*)malloc(5 * sizeof(int));
14free(arr2);