求小型编辑器的C程序

[qwh0324]

可以对记事本的内容进行输入、编辑、修改。在DOS界面的

[yiyefangzhou24]

在运行中输入cmd，打开DOS，在输入edit然后回车

[reactionaries]

运行中输入cmd，打开dos，再用cd\和cd找到你的文件地址，最后用edit进行编辑

[AnYidan]

FILE *fopen(const char *filename, const char *mode)

fopen opens the named file, and returns a stream, or NULL if the attempt fails. Legal values for mode include:
"r"
open text file for reading
"w"
create text file for writing; discard previous contents if any
"a"
append; open or create text file for writing at end of file
"r+"
open text file for update (i.e., reading and writing)
"w+"
create text file for update, discard previous contents if any
"a+"
append; open or create text file for update, writing at end
Update mode permits reading and writing the same file; fflush or a file-positioning function must be called between a read and a write or vice versa. If the mode includes b after the initial letter, as in "rb" or "w+b", that indicates a binary file. Filenames are limited to FILENAME_MAX characters. At most FOPEN_MAX files may be open at once.

FILE *freopen(const char *filename, const char *mode, FILE *stream)

freopen opens the file with the specified mode and associates the stream with it. It returns stream, or NULL if an error occurs. freopen is normally used to change the files associated with stdin, stdout, or stderr.

int fflush(FILE *stream)

On an output stream, fflush causes any buffered but unwritten data to be written; on an input stream, the effect is undefined. It returns EOF for a write error, and zero otherwise. fflush(NULL) flushes all output streams.

int fclose(FILE *stream)

fclose flushes any unwritten data for stream, discards any unread buffered input, frees any automatically allocated buffer, then closes the stream. It returns EOF if any errors occurred, and zero otherwise.

int fseek(FILE *stream, long offset, int origin)
fseek sets the file position for stream; a subsequent read or write will access data beginning at the new position. For a binary file, the position is set to offset characters from origin, which may be SEEK_SET (beginning), SEEK_CUR (current position), or SEEK_END (end of file). For a text stream, offset must be zero, or a value returned by ftell (in which case origin must be SEEK_SET). fseek returns non-zero on error.

long ftell(FILE *stream)
ftell returns the current file position for stream, or -1 on error.

void rewind(FILE *stream)
rewind(fp) is equivalent to fseek(fp, 0L, SEEK_SET); clearerr(fp).

int fgetpos(FILE *stream, fpos_t *ptr)

fgetpos records the current position in stream in *ptr, for subsequent use by fsetpos. The type fpos_t is suitable for recording such values. fgetpos returns non-zero on error.

int fsetpos(FILE *stream, const fpos_t *ptr)

fsetpos positions stream at the position recorded by fgetpos in *ptr. fsetpos returns non-zero on error.

[string199]

C中有对文件处理的函数，自己写吧，代码不会很长的、