The conversation between human and AI assistant.
How can I make an array with variable size in the C language?
Okay, how do I use 'calloc'?
To create an array using 'calloc', you can write something like this:

int *arr;
int size = 5;
arr = (int*)calloc(size, sizeof(int));

This will allocate memory for an integer array of size 5 and initialize all elements to 0.