程序编译的时候,遇到一个错误:

error: initializer element is not constant.

经检查, 是因为头文件里定义了一个常量:
static const int aaa = 25;

在C文件里, 定义了一个全局变量:
int test = aaa;

请问, 为什么会出现这个错误呢?

我的理解, aaa在编译时间内可以得到确定的值25. 同样在编译时间里, 将之付给另外的变量,会不容许吗?

我用的编译器是GCC.

算了,看来高手都在睡觉啊.

从英文网站找到了原因.

initializer element is not a constant
    In C, global variables can only be initialized with constants, such as numeric values, NULL or fixed strings. This error occurs if a non-constant value is used. Example:

    #include <stdio.h>

    FILE *stream = stdout;  /* not constant */
    int i = 10;
    int j = 2 * i;          /* not constant */

    int
    main (void)
    {
      fprintf (stream, "Hello World!\n");
      return 0;
    }

    This program attempts to initialize two variables from other variables.