Structure Initialization (All Elements to 0) In C
Thursday, December 24th, 2009Subscribe To Our Feed | Follow Us On Twitter | Get Updates on Email
A global or static structure is automatically initialized by all of its elements as 0 or null (In case of pointers). But if you want to initialize a local struct to this, what would you do? Many would say that would use a memset or calloc to set all the elements of that structure instance to 0. But this is incorrect as a null pointer might not be same as 0. So, the correct way to do this would be like:
struct a b = {0};
What this does is that it initializes the first element of the structure b to 0 (or null pointer if it is a pointer) and the rest of the elements are initialized like they would have been done if the structure was global or static.
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