Thread: default values in struct

Originally Posted by taurus

1) I have this:

Code:

struct data 
{
	int numOfObjects;
	int positions[40];
};
typedef struct data info;

I have a variable defined as: info stuff

How can i set the positions in the array positions to all 0 as default?

2) If I have an array of those structs (infoArray[]), how can I access the data?
is it:
infoArray[i].numOfObjects
OR
infoArray[i].stuff.numOfObjects
?

Global variables are automatically set to 0 or it's string equivalent. For dynamic arrays, calloc will do the same, malloc will not. Otherwise, you need to use a loop with assignment. Check on your compiler and see what your local variables are set to, initially.

There is no "infoArray", in your code, just one instance of a struct named stuff. Info is another name, or pseudonyml, for a struct of type data.

If you did have an array of these structs called "infoArray", then you'd access the data by using infoArray[i].numOfObjects. You'd use the "struct data" or "info" to define the array type, when you first declared the array, only.