Hello world/Line printer: Difference between revisions
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(Removed separate Liberty BASIC section; the BASIC example works in it.) |
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{{works with|ZX Spectrum Basic}} |
{{works with|ZX Spectrum Basic}} |
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<lang qbasic>LPRINT "Hello World!"</lang> |
<lang qbasic>LPRINT "Hello World!"</lang> |
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<lang j>require'print' |
<lang j>require'print' |
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print'Hello world!'</lang> |
print'Hello world!'</lang> |
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<lang lb>lprint "Hello, World!"</lang> |
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=={{header|PicoLisp}}== |
=={{header|PicoLisp}}== |
Revision as of 01:28, 10 December 2010
You are encouraged to solve this task according to the task description, using any language you may know.
Cause a line printer attached to the computer to print a line containing the message Hello World!
BASIC
<lang qbasic>LPRINT "Hello World!"</lang>
Batch File
<lang dos>ECHO Hello world!>PRN</lang>
C++
<lang cpp>#include <iostream>
int main() {
std::cout << "Hello world!" << std::endl; // std::endl provides a portable descriptor for line ending. return 0;
}</lang>
Factor
<lang factor> USE: io IN: hello-world
- hello ( -- ) "Hello World!" print ;
MAIN: hello</lang>
when you want a fully working program or in the listener:
<lang factor>"Hello World!" print</lang>
Haskell
<lang haskell> import System.Cmd
cmd = "echo \"Hello World!\" | lpr"
main = system cmd </lang>
J
<lang j>require'print' print'Hello world!'</lang>
PicoLisp
<lang PicoLisp>(out '(lpr "-P" "Printer01")
(prinl "Hello world") )</lang>
PureBasic
<lang PureBasic>MyPrinter$ = LPRINT_GetDefaultPrinter() If LPRINT_OpenPrinter(MyPrinter$)
If LPRINT_StartDoc("Printing a RC-Task") LPRINT_Print(Chr(27) + "E") ; PCL reset for HP Printers LPRINT_PrintN("Hello World!") LPRINT_NewPage() LPRINT_EndDoc() EndIf LPRINT_ClosePrinter()
EndIf</lang>
Python
<lang python>print "Hello World!"</lang>
REXX
There is no direct way for REXX programs to write to the printer, but
a shell command could be used.
In DOS (or under Windows):
<lang rexx>
str='Hello World'
'@ECHO' str ">PRN"
</lang>
Tcl
Unix
<lang tcl>exec lp << "Hello World!"</lang> <lang tcl>set f [open |lp w] puts $f "Hello World!" close $f</lang>
Windows
<lang tcl>set f [open prn w] puts $f "Hello World!" close $f</lang>
UNIX Shell
<lang bash>echo 'Hello World!'|lp</lang>
Alternately, there are the character devices /dev/lp0, /dev/lp1, /dev/lpN and so on which correspond to line printers (if there are any attached to the system). Data written to these devices is sent to attached printers.
<lang bash>echo 'Hello World' > /dev/lp0</lang>