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Perl Scalars



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A scalar in perl, is simply a single unit of data, that might be an integer number, a character, a string, or a floating-point, etc. Here is an example.

#!/usr/bin/perl
		
$name = "Deepak";		# this is a string assignment
$age = 19;		# this is an integer assignment
$branch = "CSE";		# this is also a string assignment

print("Name = $name\n");
print("Age = $age\n");
print("Branch = $branch\n");

Here is the sample output of the above perl program:

Name = Deepak
Age = 19
Branch = CSE

Numeric Scalars in Perl

Here is an example uses some numeric scalars in perl:

#!/usr/bin/perl

$integer_number = 40;
$negative_integer_number = -40;
$floating_number = 40.340;

print("Integer Number = $integer_number\n");
print("Negative Integer Number = $negative_integer_number\n");
print("Floating-point Number = $floating_number\n");

Here is the sample output of the above perl program:

Integer Number = 40
Negative Integer Number = -40
Floating-point Number = 40.34

String Scalars in Perl

Here is an example uses, some string scalars in perl:

#!/usr/bin/perl
		
$str1 = "I am a string scalar";
$str2 = 'I am also a string, inside a single quote - $str1';
$str3 = "I am too a string, inside a double - $str1";

print("str1 = $str1\n");
print("str2 = $str2\n");
print("str3 = $str3\n");

Here is the sample output of the above perl program:

str1 = I am a string scalar
str2 = I am also a string, inside a single quote - $str1
str3 = I am too a string, inside a double - I am a string scalar

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