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if else question

adiolord
Novice

Jun 15, 2010, 11:03 AM

Post #1 of 4 (296 views)

if else question	Can't Post

Hello all, I would like to know how to write a simple program that asks for your grade (1-100) and gives back a F,D,C,B, or A depending on the grade.

I am fine with getting all the variables, but am stuck on the output.

I have something along these lines to start but am stuck at elsif or else to go through the rest of the grades:

if ( $finalmark < 49 ) {
print "Your grade is F\n";

Zhris
User

Jun 15, 2010, 1:45 PM

Post #2 of 4 (282 views)

Re: [adiolord] if else question [In reply to]	Can't Post

Hello,

If you want to go the if / elsif / else route, then the following should be fine:

Code

my $finalmark = 60; 
 
if ($finalmark < 49) { 
	print "Your grade is F\n"; 
} 
elsif (($finalmark >= 49) && ($finalmark < 59)) { 
	print "Your grade is E\n"; 
} 
#etc 
else { 
	print "Your grade is A\n"; 
}

Personally I would use a hash table to provide information about each grade and the score boundaries (this method allows you to change how a grade is allocated by changing the values in the hash table):

Code

my $finalmark = 60; 
 
my %grades = ( 
	'E' => [0, 20], 
	'D' => [21, 40], 
	'C' => [41, 60], 
	'B' => [61, 80], 
	'A' => [81, 100] 
); 
 
foreach (keys %grades) { 
    if (($finalmark >= ${$grades{$_}}[0]) && ($finalmark <= ${$grades{$_}}[1])) { 
        print "Your grade is $_\n"; 
    } 
}

Chris

(This post was edited by Zhris on Jun 19, 2010, 1:19 PM)

BillKSmith
Veteran

Jun 15, 2010, 1:58 PM

Post #3 of 4 (276 views)

Re: [Zhris] if else question [In reply to]	Can't Post

Code

  
 
my $grade = $final_mark > 90   ?   'A' 
          : $final_mark > 80   ?   'B' 
          : $final_mark > 70   ?   'C' 
          : $final_mark > 65   ?   'D' 
          :                        'F' 
          ;

Good Luck,
Bill

Zhris
User

Jun 15, 2010, 2:02 PM

Post #4 of 4 (275 views)

Re: [BillKSmith] if else question [In reply to]	Can't Post

Ah, thats good!

Chris

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