text: #ifndef STRBUILDER_H
  #define STRBUILDER_H
  
  #include <stdlib.h>
  
  #define DEFAULT_CAPACITY 256
  
  struct strbuilder {
  	char *string;
  	size_t length;
  	size_t capacity;
  };
  
  struct strbuilder *strbuilder_create(); 
  void strbuilder_destroy(struct strbuilder *builder);
  void strbuilder_append_str(struct strbuilder *builder, const char *str); 
  void strbuilder_append_char(struct strbuilder *builder, const char c);
  char *strbuilder_build(struct strbuilder *builder); 
  
  #endif
  