Initial commit: C++ courseware
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### 参考答案
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#### **一、 填空题**
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1. 变量
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2. `int`
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3. `double`
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4. 赋值
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5. `100`
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6. `+=`
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7. `const`
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#### **二、 单项选择题**
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1. C (变量名不能以数字开头)
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2. C
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3. B
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4. B
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5. C
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6. D (`count = 1;` 是直接赋值,不是在原有基础上加1)
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#### **三、 判断题**
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1. √
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2. × (在C++中 `=` 是赋值,`==` 才是判断相等)
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3. × (常量必须在定义时就初始化)
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4. × (未初始化的变量里存放的是不确定的“垃圾值”)
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5. √
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6. √
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