struct initialization in C -

before mark duplicate/downvote, i have read books, spend decent amount of time on internet researching this, cannot find answer.

i want initialize struct when create it. want declare type using typedef

here trying do

typedef struct clock_tag clock;  struct clock_tag{   int time; }clock = {   0 }; 

and gives me error "redefinition of 'clock' different kind of symbol"

typedef struct clock_tag{  int time; }clock = {   0 }; 

gives "illegal initializer (only variables can initialized)"

i know have use name of struct in order initialize it, want initialize @ time of it's creation, please not suggest having init() method.

this example code, i want understand how can have typedef , struct initialization in .h file know there many ways around this, can omit using typedef or initialize struct members other way, want understand why gives me error , how fix it.

p.s legal malloc struct in .h file?

a typedef alias, when stating:

typedef struct clock_tag clock; 

and stating after typedef:

struct clock_tag{   int time; } clock = {0};   ^^^^^ 

you're trying initialize struct name. meant was:

typedef struct clock_tag clock;  struct clock_tag{   int time; } clock = {0};