Today, let’s talk about pointers in C language—this “address navigator” in the programming world. Pointers are like a “GPS” in programming, helping us accurately locate and manipulate data in memory. Mastering the essence of pointers will elevate your programming skills to a new level. Definition of Pointers and Memory Addresses In C language, pointers are … Read more
First, let’s address two questions ◆ What are the differences between pointers and references? ◆ When should we use pointers? When should we use references? Differences between Pointers and References See the code below: A pointer is used to represent a memory address, and this pointer is the address of the variable it points to. … Read more
Basics of Pointers: Concepts and Declarations of Pointers in C Language In C language, pointers are a very important concept. They allow programmers to directly manipulate memory, enabling efficient data processing and flexible data structures. This article will detail the basic concepts of pointers, how to declare pointers, and provide some simple code examples. What … Read more
5.Why Create the Array Data Structure From the previous analysis, we can understand that the essence of an array name is a pointer. Since we already have the pointer data type, why create the array data type? Isn’t that redundant? Can we program normally without creating arrays? The answer is: Yes, it is indeed possible … Read more
3. Analyzing from the Perspective of Compiler Semantics In fact, we have already covered a lot about the compiler’s understanding of the syntax and semantics of the C language in the previous section. Below, we will further explain this logic from the compiler’s output. In this article, we will first paste the compilation results of … Read more
2. Analysis from the Implementation Perspective (Compiled Code) Previously, we briefly understood the relationship between arrays and pointers from the perspective of program writing. Next, we will analyze this logic more deeply from the perspective of compilation implementation. int *int_pointer = int_array; lea -0x40(%rbp),%rax ; (%rbp) – 0x40 value of int_array mov %rax,-0x8(%rbp) ; -0x8(%rbp) … Read more
Help! C language almost drove me crazy, but I survived. I was really about to break down! Learning C language is simply torturing myself! Every time I open the IDE (Integrated Development Environment), my hands tremble because I know I will face a bunch of incomprehensible error messages. Those moments that drove me crazy: Pointers? … Read more
(Click the blue text above to quickly follow us) Compiled by: Bole Online/PJing, English: Rob Pike If you have good articles to submit, please click → here for details [Bole Online Guide]: Rob Pike is one of the most renowned software engineers at Google, a former member of the Bell Labs Unix development team, and … Read more
1 Variables In C++, a variable is the basic unit for storing data, having a specific type and name. Below is a detailed introduction to C++ variables: Declaration and Definition of Variables ·Declaration: Informs the compiler of the variable’s type and name without allocating memory. ·Definition: Allocates memory for the variable, which can also be … Read more
C Language Review Materials for Final Exam Practice Questions and Answers Mind MapCopy the link to open and save in the browser: https://pan.xunlei.com/s/VOF4bIaPe4XAqG0QOjWDdY1qA1?pwd=ajyh# 20. Data Input 1) scanf(“a=%d,b=%d”,&a,&b) is a super important exam point! It is essential to remember that data must be entered in the terminal in the format of the first part. The … Read more