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为什么string sentence,s1; cin>>sentence; n=sizeof(sentence)/2;

来源：学生作业帮 编辑：作业帮 分类：综合作业 时间：2024/05/17 18:06:19
为什么string sentence,s1; cin>>sentence; n=sizeof(sentence)/2; sentence输入"price>30000",n=8.
输入"price>30",n也为8.
sizeof(sentence) 等同于写成 sizeof(string),它的结果是与sentence的内容无关的一个定值,这个值在程序编译阶段已经固定,由编译器给出,而不是运行时计算的.
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