There exist pitfalls to avoid when using macros as functions in the C programming language.For example, all of the following three versions of macros are supposed to compute the square of x.Please give Three examples (expression) to illustrate that the macros may fail to computer correct results if we treat macros ad functions the first example should only fail in case (a), the second example should fail in case(a) and (b), and the third example will fail in all three cases. (a)#define SQUARE(x) x * x (b)#define SQUARE(x) (x)*(x) (c)#define SQUARE(x) ((x)*(x)) 第二个example想不出来....... 先谢谢大家了...题目好长 --

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