Can You Type Alias an Existing User-Defined Type in C?

Question

Say I want to define two structs, the first one has a type, and the other I want to be of the same type as the first. Is this possible in C99?

Example:

typedef struct {
    fieldA;
    fieldB;
} typeA;


struct B {
    fieldA
    fieldB
};

typedef B A;

If not typedef, is there another keyword/way to do this?

Edit: It seems I wasn't being as clear as possible, judging from the feedback so far (which I greatly appreciate!)

My specific scenario is a typedef struct definition that is required to type alias another struct.

Accepted Answer

Yes of course! It's just like:

#include <stdio.h>

typedef int value_t;
typedef value_t data_t;

int main()
{
    data_t i = 1;
    printf("%d\n", i);

    return 0;
}

You can typedef as many times as you like.

1 Answer