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To read from a file it must be opened for reading using fopen
.
Then a line can be read from the file using fgetl
as the following
code illustrates
fid = fopen ("free.txt"); txt = fgetl (fid) -| Free Software is needed for Free Science fclose (fid);
This of course assumes that the file ‘free.txt’ exists and contains the line ‘Free Software is needed for Free Science’.
Read characters from a file, stopping after a newline, or EOF, or len characters have been read.
The characters read, excluding the possible trailing newline, are returned as a string.
If len is omitted, fgetl
reads until the next newline
character.
If there are no more characters to read, fgetl
returns -1.
To read a line and return the terminating newline,
see fgets
.
Read characters from a file, stopping after a newline, or EOF, or len characters have been read.
The characters read, including the possible trailing newline, are returned as a string.
If len is omitted, fgets
reads until the next newline
character.
If there are no more characters to read, fgets
returns -1.
To read a line and discard the terminating newline,
see fgetl
.
Read and skip count lines from the file specified by the file descriptor fid.
fskipl
discards characters until an end-of-line is encountered
exactly count-times, or until the end-of-file marker is found.
If count is omitted, it defaults to 1. count may also be
Inf
, in which case lines are skipped until the end of the file.
This form is suitable for counting the number of lines in a file.
Returns the number of lines skipped (end-of-line sequences encountered).
Next: Formatted Output, Previous: Simple Output, Up: C-Style I/O Functions [Contents][Index]