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double占几个字节

更新时间: 2019-04-15 00:00:00     

8个。double是C语言的双精度浮点类型,对于其占字节数,C语言规范中,并没有明确规定其所占空间,只是要求double类型的整数部分的最小表示范围为1.0E-37到 1.0E+37,小数部分至少要能精确到小数点后10位。所以在实现中,各类编译器均采用8字节空间实现double。

关键词: double 字节

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