Perl lcfirst()函数

Perl中的lcfirst()函数在将第一个字符转换为小写字母后返回字符串VAR或$_。

语法： lcfirst(VAR)

参数：

VAR： 第一个字符要转换为小写的句子

返回： 字符串VAR或$_的第一个字符被小写。

例子 1 :

#!/usr/bin/perl
  
# Original String containing both
# lower and upper case letters
orignal_string = "GEEkS FoR geEkS";
  
# Converting the First character to Lower casechanged_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 casechanged_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