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Basic Input and Output

by root (Scribe)
on Nov 05, 1999 at 05:53 UTC ( #955=perltutorial: print w/ replies, xml ) Need Help??

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  1. or download this
    $a=<>;       #reads one line in from the keyboard including
                 #the newline character (\n) and puts it into $a
    while(<>){        #reads lines until end of file or a Control-D from t
    +he keyboard
       print "$_";    #prints lines back out
  2. or download this
    print "Hello World\n";    #the simplest sort of print
    print "Hello ","World\n"; #this prints the same thing but uses a list 
    +of strings to do the same thing
    print ("1+1=",(1+1));     #prints 1+1=2 first prints the string 1+1= a
    +nd then what 1+1 evaluates to(2);
  3. or download this
    printf "%3d %7.2f %5s\n",$a,$b,$c;

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