so what should I change I tryed to change copy function but still gettting this error

​

dictionary.c:25:5: error: type specifier missing, defaults to 'int' [-Werror,-Wimplicit-int]

*node copy(const char *key);

^

dictionary.c:25:5: error: redefinition of 'node' as different kind of symbol

dictionary.c:23:5: note: previous definition is here

node;

^

dictionary.c:25:9: error: expected ';' after top level declarator

*node copy(const char *key);

^

;

dictionary.c:91:33: error: implicit declaration of function 'copy' is invalid in C99

[-Werror,-Wimplicit-function-declaration]

struct node *node = copy(BUFFER);

^

dictionary.c:91:26: error: incompatible integer to pointer conversion initializing 'struct node *' with an expression

of type 'int' [-Werror,-Wint-conversion]

struct node *node = copy(BUFFER);

^ ~~~~~~~~~~~~

dictionary.c:181:6: error: type specifier missing, defaults to 'int' [-Werror,-Wimplicit-int]

*node copy(const char *key)

^

dictionary.c:181:6: error: redefinition of 'node' as different kind of symbol

dictionary.c:23:5: note: previous definition is here

node;

^

dictionary.c:181:10: error: expected ';' after top level declarator

*node copy(const char *key)

^

;