Pointer

programming

Tell It by Myself…

The Pointer can be also told as address, every data has occupied certain numbers of bytes, and to

For example

int *p = i;

That p would be the address of the i

Example:

  float x, y;
  x = 3.14; y = 2.839;
	  printf("&x=%p &y=%p\n",&x,&y);

Or,

int a = 1;
int *p = &a; //&a 表示取 a 的地址，也就是说指针 p 的内容是 a 的地址
printf("%p\n",&a); //打印 a 的地址
printf("%p\n",&p); //打印指针 p 指向的地址

The * is an unary operator, we can use it to get the pointer’s value of the address. （意思是可以通过指针来访问想要得到的值）

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Reference