Outputkeyword

Specifies text file to be opened for output mode

Syntax

Open filename for Output [Encoding encoding_type] [Lock lock_type] as [#]filenum

Parameters

Description

A file mode used with Open to open a text file for writing.

This mode is used to write text with Print #, or comma separated values with Write #.

Text files can't be simultaneously read and written in FreeBASIC, so if both functions are required on the same file, it must be opened twice.

filename must be a string expression resulting in a legal file name in the target OS, without wildcards. The file will be sought for in the present directory, unless the filename contains a path . If the file does not exist, it is created. The pointer is set at the first character of the file.

Encoding_type indicates the Unicode Encoding of the file, so characters are correctly read. If omitted, "ascii" encoding is defaulted. Only little endian character encodings are supported at the moment.

• "utf8"
  
• "utf16"
  
• "utf32"
  
• "ascii" (the default)
  
  

Lock_type indicates the way the file is locked for other processes, it is one of:

• Read - the file can be opened simultaneously by other processes, but not for reading
  
• Write - the file can be opened simultaneously by other processes, but not for writing
  
• Read Write - the file cannot be opened simultaneously by other processes (the default)
  
  

filenum Is a valid FreeBASIC file number (in the range 1..255) not being used for any other file presently open. The file number identifies the file for the rest of file operations. A free file number can be found using the FreeFile function.

Remarks

Differences from QB

See also

• Append
  
• Input (File Mode)
  
• Open
  
  

Example

Dim ff As UByte

Dim randomvar As Integer

Dim name_str As String

Dim age_ubyte As UByte



ff = FreeFile

Input "What is your name? ",name_str

Input "What is your age? ",age_ubyte

Open "testfile" For Output As #ff

Write #ff, Int(Rnd(0)*42),name_str,age_ubyte

Close #ff

randomvar=0

name_str=""

age_ubyte=0



Open "testfile" For Input As #ff

Input #ff, randomvar,name_str,age_ubyte

Close #ff



Print "Random Number was: ", randomvar

Print "Your name is: " + name_str

Print "Your age is: " + Str(age_ubyte)



'File outputted by this sample will look like this,

'minus the comment of course:

'23,"Your Name",19 

Reference

• Documented in KeyPgOutput.html