# Question & Answer: Can someone explain each line?…..

Can someone explain each line?

#! usr/bin/perl
print “Enter the Quiz score: “;
\$quiz = <>;
print “Enter the Activity score: “;
\$classactivities = <>;
print “Enter the homework score: “;
\$homework = <>;
print “Enter the labs score: “;
\$labs = <>;
print “Enter the discussion score: “;
\$discussion = <>;
print “Enter the exams score: “;
\$exams = <>;

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Question & Answer: Can someone explain each line?…..
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my %hash = (\$quiz,
\$classactivities,
\$homework,
\$labs,
\$discussion,
\$exams );

my @scores = (65,67,78,90); #array of number
my \$returned_values;
\$returned_values = sum(@scores); #calling sum function
print “sum value = \$returned_values n”;
\$returned_values = percent(5,20); #pass any value here
print “percent value = \$returned_values n”;

sub sum{
my @score_list = @_; #parameters are stored in @_
my \$result = 0;
for (@score_list) {
\$result = \$result + \$_; #computing sum
}
return \$result;
}

sub percent{
my(\$first,\$second) = @_;
my \$result = (\$first*100)/\$second;
return \$result;
}

my \$percentage = \$_[0];
return “unknown grade” if(\$percentage > 100); #passed value is greated then 100
return “A+” if(\$percentage >= 95.0 and \$percentage <= 100.0);
return “A” if(\$percentage >= 90.0 and \$percentage <= 95.0);
return “A-” if(\$percentage >= 87.5 and \$percentage <= 90.0);
return “B+” if(\$percentage >= 85.0 and \$percentage <= 87.5);
return “B” if(\$percentage >= 82.5 and \$percentage <= 85.0);
return “B-” if(\$percentage >= 80.0 and \$percentage <= 82.5);
return “C+” if(\$percentage >= 77.5 and \$percentage <= 80.0);
return “C” if(\$percentage >= 70.0 and \$percentage <= 77.5);
return “D” if(\$percentage >= 60.0 and \$percentage <= 70.0);
return “F” if(\$percentage <= 60.0);
}

#! usr/bin/perl
print “Enter the Quiz score: “;
##Ask user to enter the score
\$quiz = <>;
print “Enter the Activity score: “;
##Ask user to enter the Activity score
\$classactivities = <>;
print “Enter the homework score: “;
##Ask user to enter the homework score
\$homework = <>;
print “Enter the labs score: “;
##Ask user to enter the labs score:
\$labs = <>;
print “Enter the discussion score: “;
##Ask user to enter the discussion score:
\$discussion = <>;
print “Enter the exams score: “;
##Ask user to enter the exams score:
\$exams = <>;
my %hash = (\$quiz,
\$classactivities,
\$homework,
\$labs,
\$discussion,
\$exams );

my @scores = (65,67,78,90); #array of number
my \$returned_values; #variable declaration
\$returned_values = sum(@scores); #calling sum function to calculate the sum
print “sum value = \$returned_values n”;#print statement
\$returned_values = percent(5,20); #pass any value here to get the percent
print “percent value = \$returned_values n”;
\$returned_values = grade(72);#function call to grade to get the grade

sub sum{
my @score_list = @_; #parameters are stored in @_
my \$result = 0;
for (@score_list) {
\$result = \$result + \$_; #computing sum
}
return \$result; ##return the sum
}
sub percent{
my(\$first,\$second) = @_;
my \$result = (\$first*100)/\$second; #calculate percent
return \$result;
}
my \$percentage = \$_[0];
return “unknown grade” if(\$percentage > 100); #passed value is greated then 100
return “A+” if(\$percentage >= 95.0 and \$percentage <= 100.0); ##if percent is between 95 to 100
return “A” if(\$percentage >= 90.0 and \$percentage <= 95.0);##if percent is between 90 to 95
return “A-” if(\$percentage >= 87.5 and \$percentage <= 90.0);##if percent is between 87.5 to 90
return “B+” if(\$percentage >= 85.0 and \$percentage <= 87.5);##if percent is between 85 to 87.5
return “B” if(\$percentage >= 82.5 and \$percentage <= 85.0);##if percent is between 82.5 to 85
r
eturn “B-” if(\$percentage >= 80.0 and \$percentage <= 82.5);##if percent is between 80 to 82.5
return “C+” if(\$percentage >= 77.5 and \$percentage <= 80.0);##if percent is between 77.5 to 82.5
return “C” if(\$percentage >= 70.0 and \$percentage <= 77.5);##if percent is between 70 to 77.5
return “D” if(\$percentage >= 60.0 and \$percentage <= 70.0);##if percent is between 60 to 70
return “F” if(\$percentage <= 60.0);
}

=================
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