malloc - Allocating memory for a Structure in C

Question

I'm tasked to create a program which dynamically allocates memory for a structure. normally we would use

x=malloc(sizeof(int)*y);

However, what do I use for a structure variable? I don't think its possible to do

struct st x = malloc(sizeof(struct)); 

Could someone help me out? Thanks!

Answer 1

My favorite:

#include <stdlib.h>

struct st *x = malloc(sizeof *x); 

Note that:

• x must be a pointer
• no cast is required
• include appropriate header