const 作用1

const char * const months[12] =

{

" January ","February","March","April","May","June","July","August","September","October","November","December"

};

在上述范例中，第一个const防止字符串被修改，第二个const确保数组中每个指针始终指向它最初指向的字符串。

在c++中，const 限定符对默认存储类型稍有影响。在默认情况下全局变量的链接性为外部的，但const全局变量的链接性为内部的。也就是说，在c++看来，全局const定义就像使用了static说明符一样。

const int fingers = 10； //same as static const int fingers

int main (void)

{

.....

}