I know the diff between struct and struct with typedef keyword in front. The reference is this: typedef struct vs struct definitions
struct myStruct{
int one;
int two;
};
vs
typedef struct{
int one;
int two;
}myStruct;
But what is the diff between this two types:
struct point {
int x;
int y;
};
vs
struct point {
int x;
int y;
} my_point;
One more:
typedef struct set_t{
int count;
void **values;
} *SetRef;
what is this type?
struct point { int x; int y; };
This declares a new type struct point with two int members x and y.
struct point { int x; int y; } my_point;
This also declares a new type struct point with two int members x and y and this declares an object my_point of type struct point.
The first declares a struct type, while the second one declares both the type and an instance my_point. In other words, my_point is not a type, but rather an actual struct point instance.
In the second, you also define a varibale (named my_point) from the type struct point.
The first one only declares the structure. You will have to use it later to create an object of it later. The second one declares the structure and a object of it at the same time.
