C ++ proper new use?

Question

int* array = new int[ 10 ]( );

Is this the correct use of the new operator? As far as I know, the previous code initializes each element of the array to 0.

int* array = new int[ 10 ];

The second line of code just initializes the array, but doesn't set the value to zero?

Answer 1

The correct way to use the new operator depends on what you are going to do after allocating memory.

int* array = new int[10](); will disable the allocated memory as it starts the int initializer for each int in the array.

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std::vector<int> safeArray(10);
int* array = &safeArray[0]; // array now points to the 0th element in safeArray

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