Is there a better way to initialize an allocated array in C++?

Question

How to write this in another (perhaps shorter) way? Is there a better way to initialize an allocated array in C++?

int main(void) {
   int* a;
   a = new int[10];
   for (int i=0; i < 10; ++i) a[i] = 0;
}

Answer 1

 int *a =new int[10](); // Value initialization

ISO C++ Section 8.5/5

To value-initialize an object of type T means:

— if T is a class type (clause 9) with a user-declared constructor (12.1), then the default constructor for T is called (and the initialization is ill-formed if T has no accessible default constructor);

— if T is a non-union class type without a user-declared constructor, then every non-static data member and base-class component of T is value-initialized;

— if T is an array type, then each element is value-initialized;

— otherwise, the object is zero-initialized

For differences between the terms zero initialization, value initialization and default initialization, read this