text: #ifndef _LIBICONV_H
  #define _LIBICONV_H
  #include <stddef.h>
  #ifdef __cplusplus
  extern "C" {
  #endif
  typedef void* iconv_t;
  iconv_t iconv_open(const char *tocode, const char *fromcode);
  int iconv_close(iconv_t cd);
  size_t iconv(iconv_t cd, char **inbuf, size_t *inbytesleft, char **outbuf, size_t *outbytesleft);
  #ifdef __cplusplus
  }
  #endif
  #endif//_LIBICONV_H