#!/usr/bin/perl
print"###simple calculator program##\n\n";
until ($opt2 eq'y')
{
print "enter the first number\n";
$num1=<>;
print "enter the second number\n";
$num2=<>;
print "enter your option\n\+ for addition\n\- for subtraction\n\* for 
+multiplication\n\/ for divison\n option:";
$opt=<>;
chomp($opt);
if ($opt eq'+')
        {
     print "you pressed the \+key\n press any key to continue\n";
         <>;
         $ans=$num1+$num2;
         print "the answer is $ans\n";
          } 
elsif ($opt eq'-')
        {
     print "you pressed the \-key\n press any key to continue\n";
         <>;
         $ans=$num1-$num2;
         print "the answer is $ans\n";
          }
elsif ($opt eq'*')
        {
     print "you pressed the \*key\n press any key to continue\n";
         <>;
         $ans=$num1*$num2;
         print "the answer is $ans\n";
          }
elsif ($opt eq'/')
        {
     print "you pressed the \/key\n press any key to continue\n";
         <>;
         $ans=$num1/$num2;
         print "the answer is $ans\n";
          }else
       {
            print "you have entered wrong option\n";
       }
print " do you want to continue press y or n?\n";
$opt2=<>;
}else
  {
   print "thanks for using\n";
  }

<>;

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In reply to help me to find out the error?? by dacka

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