块注释用于注释正式文档和无用代码。
Save block comments for formal documentation and for commenting out.
如果检测到无用代码，编译器现在可以发出警告。
The compiler can now issue a warning if dead code is detected.
程序中的无用代码意味着算法设计、代码实现中存在着问题。
The occurrence of dead codes in programs implies that there is something wrong with arithmetic designing and coding.
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