int remove(const char *filename); int rename(const char *old, const char *new); FILE *tmpfile(void); char *tmpnam(char *s); int fclose(FILE *stream); int fflush(FILE *stream); FILE *fopen(const char *filename, const char *mode); file modes FILE *freopen(const char *filename, const char *mode, FILE *stream); int setvbuf(FILE *stream, char *buf, int mode, size_t size); void setbuf(FILE *stream, char *buf); int printf(const char *format, ...); printf format int fprintf(FILE *stream, const char *format, ...); int sprintf(char *s, const char * format, ...); int vfprintf(FILE *stream, const char *format, va_list arg); int vprintf(const char *format, va_list arg); int vsprintf(char *s, const char *format, va_list arg); int scanf(const char *format, ...); scanf format int fscanf(FILE *stream, const char *format, ...); int sscanf(const char *s, const char *format, ...); int fgetc(FILE *stream); int fgets(char *s, int n, FILE *stream); int fputc(int c, FILE *stream); int fputs(const char *s, FILE *stream); int getc(FILE *stream); int getchar(void); char *gets(char *s); int putc(int c, FILE *stream); int putchar(int c); int puts(const char *s); int ungetc(int c, FILE *stream); size_t fread(void *ptr, size_t size, size_t nmemb, FILE *stream); size_t fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream); int fgetpos(FILE *stream, fpos_t *pos); int fseek(FILE *stream, long int offset, int whence); int fsetpos(FILE *stream, const fpos_t *ps); long int ftell(FILE *stream); void rewind(FILE *stream); void clearerr(FILE *stream); int feof(FILE *stream); int ferrror(FILE *stream); void perror(const char *s);