What does the following code snippet do?1double *values = (double*)calloc(10, sizeof(double));
Question
What does the following code snippet do?1double values = (double)calloc(10, sizeof(double));
Solution
This code snippet is written in C. It does the following:
-
It declares a pointer to a double named
values. -
It then allocates memory for 10 doubles using the
callocfunction. Thecallocfunction is a memory allocation function that initializes the allocated memory to zero. The size of the memory to be allocated is calculated by multiplying the number of elements (10 in this case) by the size of each element (sizeof(double)in this case). -
The
(double*)beforecallocis a type cast that ensures the returned pointer fromcallocis of typedouble*. -
The pointer to the first byte of the allocated memory is then assigned to
values.
So, in summary, this code snippet is used to dynamically allocate memory for an array of 10 doubles, and the pointer to this array is stored in values. The allocated memory is initialized to zero.
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