Question

typedef struct s {
char name[20];
char last_name[20];
int height;
} s_t;

s_t my_s_t;
my_s_t.name = "John";

I get “Incompatible types in assignment” for the last line.
What am I doing wrong?

Answer 1

my_s_t.name = "John";

name is a char array. So you can´t directly assign a string literal to it. You can use strcpy or similar function to copy the string literal OR declare name as char*.

Options:

1)

typedef struct s {
char name[20];
char last_name[20];
int height;
} s_t;

s_t my_s_t;
strcpy(my_s_t.name, "John");

2)

 typedef struct s {
    char *name;
    char last_name[20];
    int height;
    } s_t;

    s_t my_s_t;
    my_s_t.name = "John";