Today, let’s talk about a relatively advanced concept in C language—double pointers. Double pointers are like the “key to deep control” in the programming world, helping us implement more complex logic in memory operations. As a seasoned engineer graduated from Peking University, I will guide you through the charm of double pointers in an easy-to-understand … Read more
(This article is a transfer from Zhihu to this public account) Introduction: I started learning data structures in the second semester of my sophomore year. However, with a full schedule and various commitments, I found it hard to focus in class and couldn’t understand much (especially after almost forgetting C language during the summer vacation … Read more
Defining Struct Variables The following example illustrates how to define a struct variable. struct string { char name[8]; int age; char sex[2]; char depart[20]; float wage1, wage2, wage3, wage4, wage5; }person; This example defines a struct variable named person of type string. The variable name person can also be omitted, defined as follows: struct string … Read more
📌 Problem Description Write a program to output the first n terms of the Fibonacci sequence (starting from 1, in the form of 1, 1, 2, 3, 5…). Requirements:1. Support input of any positive integer n2. Optimize time complexity to O(n)Example: Input: n=5 → Output: 1 1 2 3 5 Input: n=1 → Output: 1 … Read more
In some exam questions, macro definitions as shown in the following images often appear. Are these macro definitions correct? They are definitely wrong! This has caused considerable trouble for teaching and students when solving problems. This article will analyze the relevant knowledge of macro definitions, the side effects caused by similar errors, and provide guidance … Read more
Some screenshots of electronic books 【Complete Set of Hardware Learning Materials】
In C language, functions are also a type of “object”, which have addresses in memory. Therefore, it is possible to define pointers to functions, which can be used for dynamic calls, callback handling, building function tables, etc. Mastering function pointers is key to understanding the “low-level abstraction” and “modular programming” in C language. 1. Basic … Read more
Accumulation AlgorithmThe accumulation algorithm in C language is one of its fundamental algorithms, primarily used to sum values through looping methods, such as using a for loop to calculate the sum of all elements in a known array (it seems that the standard library in C does not have built-in methods for summing arrays).In some … Read more
In C language, conditional judgment statements such as <span>if</span>, <span>else if</span>, <span>else</span>, and <span>switch-case</span> allow different code paths to be executed based on various conditions. This is the foundation for writing logical control programs. Before diving into the main content, let’s first review the definition and structure of functions in C language. 1. Function Definition … Read more
Cumulative Product AlgorithmThe cumulative product algorithm in C language, as the name suggests, is the product obtained by multiplying a set of data together, such as a*b*c*d*e.The cumulative product algorithm is one of the basic algorithms in C language, commonly used to calculate the product of all elements in an array (for example, in statistics … Read more