字符串可以用作数组索引吗? [英] Can strings be used as an array index?

问题描述

字符串可以用作 C 中的数组索引吗?

Can a string be used as array index in C?

例如:字符串对应值一个"1二"2五"5十"10

Ex: String Corresponding value "ONE" 1 "TWO" 2 "FIVE" 5 "TEN" 10

当上面列表中的字符串传递给函数时，函数必须返回上面指示的相应值.这可以通过声明一个以字符串为索引的常量数组来实现

When a string in the above list is passed to the function, the function must return the corresponding value indicated above. Can this be achieved by declaring a constant array with string as index

int *x;
x["ONE"]  = 1;
x["TWO"]  = 2;
x["FIVE"] = 5;
x["TEN"]  = 5;

return x["string received by the function"];

上述逻辑没有按预期工作；是否有解决方法来实现上述逻辑以获得字符串索引数组?

The above logic does not work as expected; is there a workaround to implement the above logic in order to have a string-indexed array?

推荐答案

它可能会编译，但不会工作.

It might compile, but it won't work.

您要实现的目标并不完全清楚.我认为您需要一个关联数组，在这种情况下，您应该找到一个的库实现.

It's not entirely clear what you're trying to achieve. I think you want an associative array, in which case you should find a library implementation of one.

如果您正在寻找更像枚举类型的东西，您可以依靠C89，看看类似:>

If you're looking for something more like an enumerated type, and you can rely on C89, look at something like:

enum cardsuit {
   CLUBS,
   DIAMONDS,
   HEARTS,
   SPADES
};

如果你不能依赖 C89，那么你应该尝试一些 typedef 技巧.

If you can't rely on C89, then you should try some typedef trickery.

这篇关于字符串可以用作数组索引吗?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！