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条件脚本问题

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条件脚本问题

我正在创建一个简单的 bash 脚本

#!/bin/bash
echo "Q:1 What does CD command do? ************"
echo "  1)Change directory "
echo "  2)Change File"
echo "  3)Change OS"
echo "  4)None of the Above" 

read n
case $n in
  1) echo "correct answer";;
  2) echo "Wrong Answer";;
  3) echo "Wrong Answer";;
  4) echo "Wrong Answer";;
  *) echo "invalid option";;
esac

我将通过重复此代码添加 10 到 20 个问题，我想要的是，如果任何一个人给出了错误或正确的答案，他最终会通过说正确答案：？和错误答案：？来获得总分，你的总分是？？..如果有人能帮忙的话。谢谢

答案1

您可以设置两个变量，一个用于正确答案计数，另一个用于错误答案计数，初始值为零，然后增加它们。此外，如果插入了无效值，您可能需要使用 while 循环再次请求输入，如下所示：

#!/bin/bash

correct=0
wrong=0

echo "Q:1 What does CD command do? ************"
echo "  1)Change directory "
echo "  2)Change File"
echo "  3)Change OS"
echo "  4)None of the Above" 

while read n

do

case $n in
  1) echo "correct answer"; ((correct++)); break;;
  2) echo "Wrong Answer"; ((wrong++)); break;;
  3) echo "Wrong Answer"; ((wrong++)); break;;
  4) echo "Wrong Answer"; ((wrong++)); break;;
  *) echo "invalid option. Please try again"; ((wrong++));;
esac

done



echo "Q:1 What does SU command do? ************"
echo "  1)Change user "
echo "  2)Change File"
echo "  3)Change OS"
echo "  4)None of the Above" 

while read n

do

case $n in
  1) echo "correct answer"; ((correct++)); break;;
  2) echo "Wrong Answer"; ((wrong++)); break;;
  3) echo "Wrong Answer"; ((wrong++)); break;;
  4) echo "Wrong Answer"; ((wrong++)); break;;
  *) echo "invalid option. Please try again"; ((wrong++));;
esac

done

echo "$correct";
echo "$wrong";

如果提供了输入，将break中断当前的 while 循环并转到下一个问题1,2,3 or 4，否则循环将继续要求输入，直到输入有效的选项ie. 1,2,3, or 4

我想您现在会很容易算出总分。

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