Bagaimana untuk Memulakan Tatasusunan Integer Dengan Cekap Menggunakan Operator Baharu dalam C ?

Initialising Memory with the New Operator: A C++ Approach

When initially allocating an array of integers using the new operator, there's a concern about efficiently initialising them to 0. While memset is an option, it may not be the most elegant solution. In C++, there's a convenient alternative.

C++ provides syntax specifically tailored for value-initialising arrays:

new int[10]();

This syntax ensures that each element of the array is assigned the default value for its type, in this case, 0 for integers. It's crucial to include the empty parentheses as they differentiate value-initialisation from other forms.

The C++ standard (ISO C++03 5.3.4[expr.new]/15) explicitly allows value-initialisation using empty parentheses in a new-expression. This feature applies to all object types, including arrays, making it an efficient and "C++" way to initialise memory upon allocation.

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