Initializing array of fundamental types

Question

When creating an array of fundamental type such as :

double *aPtr = new double[10];

Is there a way of initializing it to a specific value? ((ex)-1)

Is creating a new class the only way?

Answer 1

The fill_n function can be what you are looking for. It will assign the n first values of your array with a specific value.

double *aPtr = new double[10];

std::fill_n(aPtr, 10, -1); // Fill the aPtr array with the value -1 for the 10 first values.

I do not know a specific way to fill it directly with one same value at declaration.

Answer 2

you can use std::fill_n:

std::fill_n(aPtr , 10, -1);