#ifndef _BITS_STDIO_H #define _BITS_STDIO_H typedef struct FILE FILE; 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 */