Can we use function on left side of an expression in C and C++?

　　In C, it might not be possible to have function names on left side of an expression, but it’s possible in C++.

 1 #include<iostream>
 2 using namespace std;
 3
 4 /* such a function will not be safe if x is non static variable of it */
 5 int &fun()
 6 {
 7     static int x;
 8     return x;
 9 }
10
11 int main()
12 {
13     fun() = 10;
14
15     /* this line prints 10 on screen */
16     printf(" %d ", fun());
17
18     getchar();
19     return 0;
20 }

　　不过，貌似C语言中也是可以的，比如下面的例子。

 1 #include<stdio.h>
 2 int* fun()
 3 {
 4     static int x;
 5     return &x;
 6 }
 7
 8 int main()
 9 {
10     *(fun()) = 10;
11     /* this line prints 10 on screen */
12     printf(" %d ", *(fun()));
13     return 0;
14 }

　　

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　　2013-11-27　　12:23:57