message: Add *scanf to header
diff: @@ -7,5 +7,8 @@ int fprintf(FILE * stream, const char * fmt, ...);
  int printf(const char * fmt, ...);
  int snprintf(char *s, size_t n, const char * fmt, ...);
  int sprintf(char *s, const char * fmt, ...);
  +int fscanf(FILE * stream, const char * fmt, ...);
  +int scanf(const char * fmt, ...);
  +int sscanf(const char * input, const char * fmt, ...);
  #endif /* _BITS_STDIO_H */
  