20200118-指针的特殊用法

1. #include "stdafx.h"

2. #include "iostream"

3. #include "cstring"

4. #include "string"

5. using namespace std;

6. unsigned long left(unsigned long num,unsigned ct);

7. char * left(const char * str,int n=1);

8. int main()

9. {

10. char * trip="Hawaii!!";

11. cout<<*trip<<endl;

12. cout<<trip<<endl;

13. //int *bb=6;  这样写是不允许的

14. int a=6;

15. int *pt=&a;

16. int b=*pt * *pt;

17. cout<<b<<endl;

18. }

运行结果：