#include <stdio.h> int main () { int urn[5]={100, 200, 300, 400, 500}; int *ptr1, *ptr2, *ptr3; ptr1=urn; ptr2=&urn[2]; //加法 printf("ptr3=ptr1+4= %p/n",ptr3=ptr1+4); printf("ptr3==&urn[4] is %b/n", ptr3==&urn[4]) //递增 printf("ptr1++= %p/n",ptr1++); }