50分只给一人。
以下程序中static定义的静态变量还是弄不清他是怎么起作用的,麻烦各位说的简明点。
#include <stdio.h>
#include <stdlib.h>
int n=1;
void func()
{
static int x=4;int y=10;
x+=2;
n+=10;
y+=n;
printf ("FUNC :x=%2d y=%2d n=%2d\n",x,y,n);
}
int main()
{
static int x=5;
int y;
y=n;
printf ("MAIN :x=%2d y=%2d n=%2d\n",x,y,n);
func();
printf ("MAIN :x=%2d y=%2d n=%2d\n",x,y,n);
func();
system ("PAUSE");
return 0;
}