#ifndef str_h #define str_h struct Arena; int string_equal(const char* a, const char* b); int string_copy(char* dst, const char* src); int string_len(const char* s); char* dup_string(struct Arena* a, const char* s); int int_to_buf(int n, char* buf); int f_to_buf(int f, char* buf); #endif