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@@ -81,7 +81,6 @@ input, err := inputReader.ReadString('\n')
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第二个例子从键盘读取输入，使用了 `switch` 语句：
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**Listing 12.3—switch_input.go:**
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-
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```go
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package main
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import (
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@@ -123,25 +122,22 @@ func main() {
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default: fmt.Printf("You are not welcome here! Goodbye!\n")
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}
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}
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-```
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+```
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注意：Unix和Windows的行结束符是不同的！
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**练习**
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-**Exercise 12.1:** word_letter_count.go
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-Write a program which reads text from the keybord. When the user enters ‘S’ in order to signal the end of the input, the program shows 3 numbers:
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-i) the number of characters including spaces (but excluding ‘\r’ and ‘\n’)
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-ii) the number of words
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-iii) the number of lines
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-
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-**Exercise 12.2:** calculator.go
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-Make a simple (reverse polish notation) calculator. This program accepts input from the user in the
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-form of integers (maximum 999999) and operators (+, -, *, /).
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-
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-The input is like this: number1 ENTER number2 ENTER operator ENTER result is displayed.
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+**练习 12.1:** word_letter_count.go
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+编写一个程序，从键盘读取输入。当用户输入 'S' 的时候表示输入结束，这时程序输出 3 个数字：
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+i) 输入的字符的个数，包括空格，但不包括 '\r' 和 '\n'
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+ii) 输入的单词的个数
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+iii) 输入的行数
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-The programs stops if the user inputs “q”. Use the package stack you developed in Ex. 11.3
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+**练习 12.2:** calculator.go
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+编写一个简单的逆波兰式计算器，它接受用户输入的整型数（最大值 999999）和运算符 +、-、*、/。
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+输入的格式为：number1 ENTER number2 ENTER operator ENTER --> 显示结果
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+当用户输入字符 'q' 时，程序结束。请使用您在练习11.3中开发的 `stack` 包。
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## 链接
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无闻