Perl | lcfirst()函数

原文:https://www.geeksforgeeks.org/perl-lcfirst-function/

Perl 中的 lcfirst()函数在将 first 字符转换为小写后返回字符串 VAR 或$_。

语法: lcfirst(VAR)

参数: VAR: 第一个字符要转换成小写的句子

返回:第一个字符小写的字符串 VAR 或$_。

例 1:

#!/usr/bin/perl

# Original String containing both
# lower and upper case letters
$orignal_string = "GEEkS FoR geEkS";

# Converting the First character to Lower case
$changed_string = lcfirst($orignal_string);

# Printing the original String
print "Original String : $orignal_string\n";

# Printing the Changed String
print "Changed String : $changed_string\n";

输出:

Original String : GEEkS FoR geEkS
Changed String : gEEkS FoR geEkS

例 2:

#!/usr/bin/perl

# Original String containing 
# lower and upper case letters
# as well as numerics
$orignal_string = "G33kS F0R g3EkS";

# Converting the first character to Lower case
$changed_string = lcfirst($orignal_string);

# Printing the original String
print "Original String : $orignal_string\n";

# Printing the Changed String
print "Changed String : $changed_string\n";

输出:

Original String : G33kS F0R g3EkS
Changed String : g33kS F0R g3EkS

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