【单选题】【消耗次数：1】
程序运行中需要从键盘上输入多于一个数据时，各数据之间应使用()符号作为分隔符。
①
空格或逗号
②
逗号或回车
③
逗号或分号
④
空格或回车
参考答案：
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相关题目
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用标准输入流对象cin与提取操作符>>连用进行输入时，将空格与回车当作分隔符，使用（）成员函数进行输入时可以指定输入分隔符。
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在进行“修剪”操作时，首先要定义修剪边界，如果没有选择任何对象，而是直接按回车或右键或空格，结果是（ ）。
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【简答题】
赋值运算符比逗号运算符的优先级别[填空1]。
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