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
Perl Online Test
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