Question

How do you implement function Key *key_construc(char *in_name, int in_id);?

Hint: first use malloc(sizeof(Key)), next use malloc( (strlen(in name)+1)*sizeof(char) ), then use strcpy(). (Do not use strdup()).

Answer 1

You have not given the struct defintion of Key. I presume it has name and id fields in it. If not, post a comment and I'll help to fix the code.

Key *key_construc(char *in_name, int in_id)
{
Key* k = (Key*)malloc(sizeof(Key)); //allocate memory for the struct
k->name = (char*) malloc((strlen(in_name)+1)*sizeof(char)); //allocate memory for the name string since its pointer
strcpy(k->name, in_name); //copy the name into the struct's name field
k->id = in_id; //set the id in the struct
return k; //return the allocated key
}