运算符&和*的示例
#include<iostream.h>
#include<stdio.h>
int main()
{
int n;
int *nptr;
n=7;
nptr=&n;
printf("The address of n is %p"
"\nThe value of nptr is %p\n\n",&n,nptr);
printf("The value of n is %d"
" \nThe value of *nptr is %d",n,*nptr);
printf("\n\n&*nptr=%p\n*&nptr=%p\n",&*nptr,*&nptr);
return 0;
}