C++指针初始化

（转http://www.nowamagic.net/librarys/veda/detail/2128）
int i;
int *pi;
i = 30;
pi = &i;
printf("%d\n", i);
printf("%d\n", *pi);
printf("%d\n", &i);

#include "stdio.h"

main()
{
    char a,*pa;
    a = 10;
    pa = &a;
    *pa = 20;
    printf("%d", a);
}

int i, *pa, a[] = {3,4,5,6,7,3,7,4,4,6};
pa = a; /*请注意数组名a直接赋值给指针pa*（a的首地址赋给pa）/
for (i = 0; i <= 9; i++)
{
    printf("%d\n", pa[i]);
}

int i, *pa, a[] = {3,4,5,6,7,3,7,4,4,6};
pa = a;
for (i = 0; i <= 9; i++)
{
    printf("%d\n", *(pa+i));
}