Perl ucfirst Function

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The Perl ucfirst function takes a string, converts its first character in uppercase and than returns the new string.

The syntax forms of the ucfirst function are as follows:

ucfirst EXPR

It returns the value of EXPR with its first character in uppercase.

If the argument is a string variable, this function returns the variable with its first character uppercase, but it doesn’t alter the content of the variable.

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In the second syntax form, EXPR is omitted, so the Perl ucfirst function uses the special variable $_. As with other functions, you can use or omit the parentheses, as you like.

If the first letter of the string expression is uppercase, the function will do nothing.

The following simple example shows you how to convert the first character of a string in uppercase, using the ucfirst function:

# initialize a string variable
my $str = "an example about ucfirst function";
my $newStr = ucfirst $str;

print "$newStr\n";
# it prints: An example about ucfirst function

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Table of Contents:

A Perl Script
Install Perl
Running Perl
Perl Data Types
Perl Variables
Perl Operators
Perl Lists
Perl Arrays
    Array Size
    Array Length
Perl Hashes
Perl Statements
    Perl if
    Perl unless
    Perl switch
    Perl while
    Perl do-while
    Perl until
    Perl do-until
    Perl for
    Perl foreach
Built-in Perl Functions
    Functions by Category
        String Functions
        List Functions
        Array Functions
        Hash Functions
        Miscellaneous Functions
    Functions in alphabetical order
        ucfirst (more)

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