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@ -343,6 +343,18 @@ Step 2.12: if c == CMD_QUIT then 退出
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
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
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#### read_data
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Step 1: 输入文件名
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Step 2: 打开文件
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Step 3: if 文件为空 then 结束
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Step 4: else 读取文件
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Step 5: 提示读取并记录
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
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#### save_data
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#### save_data
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Step 1: 输入文件名
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Step 1: 输入文件名
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@ -361,15 +373,6 @@ Step 3: else 学号存在 then 输出学号、姓名、成绩
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
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
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#### read_data
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Step 1: 输入文件名
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Step 2: 打开文件
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Step 3: if 文件为空 then 结束
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Step 4: else 读取文件
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Step 5: 提示读取并记录
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
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#### make_chart
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#### make_chart
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