Difference between revisions of "Readline"

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(Created page with '== Overview == This readline[n] function will read a line from a file with handle ''n''. The file handle maintains its position in the file, so after a call to readline the posi…')
 
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== Overview ==
 
== Overview ==
  
This readline[n] function will read a line from a file with handle ''n''. The file handle maintains its position in the file, so after a call to readline the position pointer will be incremented.  
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This readline(f) function will read a line (delimited by the new line character) from a file with handle ''f''. The file handle maintains its position in the file, so after a call to readline the position pointer will be incremented.  
  
* '''Pass:''' The file handle to read the line from
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* '''Pass:''' The [[File]] handle to read the line from
* '''Returns:''' A line of the file type String
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* '''Returns:''' A line of the file type [[String]]
  
 
== Example ==
 
== Example ==
  
  var a:=openfile["hello.txt","r"];
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  #include <io>
var u:=readline[a];
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  closefile[a];  
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function void main() {
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    var f:=open("hello.txt","r");
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    var u:=readline(f);
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    close(f);
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  };
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''Since: Version 0.41b''
  
 
[[Category:Function Library]]
 
[[Category:Function Library]]
 
[[Category:IO Functions]]
 
[[Category:IO Functions]]

Latest revision as of 15:44, 15 April 2019

Overview

This readline(f) function will read a line (delimited by the new line character) from a file with handle f. The file handle maintains its position in the file, so after a call to readline the position pointer will be incremented.

  • Pass: The File handle to read the line from
  • Returns: A line of the file type String

Example

#include <io>

function void main() {
   var f:=open("hello.txt","r");
   var u:=readline(f);
   close(f);
};

Since: Version 0.41b