function returning pointer

1. The concept of pointers In the computer, all the data is stored in the memory. In general, a byte in memory is called a memory unit, different data types occupy a number of memory units, such as the integer 2 units, the character of 1 units, etc.,

Distinguish function pointer and pointer function _. There are a lot of complaints about the constantly changing handling of pointers and arrays, but it should be clear now. With the foundation of the previous lecture, the content of this lecture is

There are a lot of complaints about the constantly changing handling of pointers and arrays, but it should be clear now. With the foundation of the previous lecture, the content of this lecture is relatively easy to understand. 1. pointer to the

Program --- C language details 22 (Precautions for returning the pointer to the function (floating pointer), view the memory size that can be allocated by the process)Main Content: Precautions for returning pointers to Functions View the memory

In the previous chapter, we've learned how to return an array from a function in C, similarly, C allows you to return a pointer from a function. To do this, you must declare a function that returns a pointer, as follows:1 int * myFunction ()2{3. 4 .

C++return pointer c from function+ + pointers C + +pointers in the previous chapter, we've learned about CHow to return an array from a function in + +, similar to C + +allows you to return a pointer from a function. To do this, you must declare a

What is a null pointer constant (null pointer constant )? [6.3.2.3-3] An integer constant expression with the value 0, or such an expression cast to type void *, is called a null pointer constant. Here we will tell you: 0, 0L, '\ 0', 3-3, 0*17

What is a null pointer constant (NULL pointer constant )?[6.3.2.3-3] an integer constant expression with the value 0, or such an expression cast to type void *, is called a null pointer constant.Here we will tell you: 0, 0l, '/0', 3-3, 0*17 (they

Author: JW. Zhou Date: 2014/7/2 1. NULL pointer (0/null) Returning null is equivalent to returning 0, because both null and 0 indicate null pointers. In other words, what is a null pointer is a pointer assigned 0, before initialization, the value is

1. Preface With regard to pointer functions and function pointers, especially function pointers, I believe many C/C ++ ers have the same reverence for them as I used to, and think they are very advanced. In fact, they are not. It won't take much