Perl | uc()函数
Perl 中的 uc()函数将传递给它的字符串转换成大写后返回。它类似于 ucfirst()函数，只返回大写的第一个字符。
注意:已经大写的字符不修改。
语法: uc String
返回:字符串大写。
例 1:
#!/usr/bin/perl -w
# String to be converted to UPPERCASE
$string = "geeksfOrGeeks";
print "Original String: $string\n";
# Converting the string to
# UPPERCASE using uc() function
$UPPER_STRING = uc($string);
print "Modified String: $UPPER_STRING";
Output:
Original String: geeksfOrGeeks
Modified String: GEEKSFORGEEKS
例 2:
#!/usr/bin/perl -w
# String to be converted to UPPERCASE
$string = "WelComEToGeeKS";
print "Original String: $string\n";
# Converting the string to
# UPPERCASE using uc() function
$UPPER_STRING = uc($string);
print "Modified String: $UPPER_STRING";
输出:
Original String: WelComEToGeeKS
Modified String: WELCOMETOGEEKS
