编程练习1-输入姓，返回名

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目录

• 输入姓，返回名
  • perl
  • shell
  • tcl
  • python

输入姓，返回名

perl

#!/usr/bin/perl

%map=('Lebron'=> 'James','Paul'=> 'George');  #create hash

while(defined($line= <STDIN>)){     #将键盘输入保存为变量$line
if( $line eq "Lebron
" )
{printf "$map{'Lebron'}
"}
elsif( $line eq "Paul
" )         #注意回车符

{printf "$map{'Paul'}
"}
else
{printf "NO"}
}

shell

#!/bin/bash

#使用ifelse语句
echo "please enter the last name:"
while :                            #无限循环
do
read lastname
if [ $lastname == "Lebron" ];then  #注意等号两边的空格
echo "James"
elif [ $lastname == "Paul" ];then
echo "George"
else
echo "none"
fi
done

#使用case语句
echo "please enter the last name:"
while :;do
read lastname
case $lastname in
Lebron) echo "James";;
Paul) echo "George";;
*) echo "None";;        #输入不匹配上面列出的项时
esac
done

tcl

while {1} {                 #无限循环
set input [gets stdin]      #从键盘读取输入
#puts $input
if {[string match "Lebron" $input]} {  #注意}与下一个{之间的空格
puts "James"
} elseif {[string match "Paul" $input]} {
puts "George"
} else {
puts "None"
}
}

python

#!/usr/bin/env python 
# -*- coding:utf-8 -*-

while 1:                                  #无限循环
    str=input("please enter last name:")  #使用input函数读取键盘输入
    if (str == "Lebron"):
        print ("James")
    elif (str == "Paul"):
        print ("George")
    else:
        print ("None")