Difference between revisions of "FGETS()"
Helen.george (Talk | contribs) |
Yvonne.milne (Talk | contribs) |
||
Line 38: | Line 38: | ||
[[Category:Documentation]] | [[Category:Documentation]] | ||
[[Category:Functions]] | [[Category:Functions]] | ||
− | |||
[[Category:ASCII File Access Functions]] | [[Category:ASCII File Access Functions]] |
Latest revision as of 08:20, 4 February 2013
Contents
Purpose
Function to read and return a line of text from an ASCII file
Syntax
FGETS(<expN1>[,<expN2>][,<expC>])
See Also
FCLOSE(), FCREATE(), FEOF(), FERROR(), FFLUSH(), FOPEN(), FPUTS(), FREAD(), FREADSTR(), FSEEK(), FWRITE()
Description
The FGETS() function reads and returns a line of text from the file specified by <expN>, an ASCII file handle. The file handle is returned from the FCREATE() or FOPEN() functions. The FGETS() function reads a line of text from the current position of the record pointer. You may optionally specify the number of bytes to read from that point with the numeric expression <expN2>. The number of bytes may be from 0 to 254. If a number is not specified, the FGETS() function will read 254 bytes or to the end line marker. The optional character expression <expC> defines an end of line terminator to determine where the FGETS() function will stop reading. The character expression <expC> must evaluate to one or two characters.
Example
open database southwind use example fp=fcreate("names.txt") count=0 do while not eof() count = count + fputs(fp,trim(last_name) + ", "+trim(first_name)) skip enddo fclose(fp) echo str(count,5) + " bytes written.\n" fp = fopen("names.txt") count = 0 do while not feof(fp) if left(fgets(fp),5) = "Smith" ++count endif enddo fclose(fp) echo str(count,5) + " Smiths found.\n" close databases