What does the code in description below means?

Question

n=(struct node*)malloc(sizeof(struct node));

Answer 1

It means, you request system to allocate some memory (using malloc) the size of the allocated memory is just about the number of bytes it is needed to create a node structure. Then you cast the address of memory block allocated to a pointer of a node structure which you then assign to a variable named n.

Hth, cmiiw

Answer 2

It's the same as:
n = new struct node;