Baiklah, PR: Bagaimana mungkin X[i] diinterpretasikan sama dengan i[X] di C? (Alright, homework: How can X[i] possibly be interpretted the same as i[X] in C?)

問題描述

Baiklah, PR: Bagaimana mungkin X[i] diinterpretasikan sama dengan i[X] di C? (Alright, homework: How can X[i] possibly be interpretted the same as i[X] in C?)

  

Possible Duplicate:   In C arrays why is this true? a[5] == 5[a]  

How can X[i] possibly be interpretted the same as i[X] in C?

I think the question is asking how an array[elementInArray] can be interpretted the same as elementInArray[array]

Also, unrelated on the same homework: "Explain why the "hidden bit" of floating point format does not need to be represented." (in terms of 32 bit words of binary)

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參考解法

方法 1:

In C, X[i] = i[X] = *(X + i) = *(i + X). As per commutative property, they are same.

(by Jordan、max)

參考文件

1. Alright, homework: How can X[i] possibly be interpretted the same as i[X] in C? (CC BY‑SA 3.0/4.0)