C/C++

Day 18: Developing Programming Habits in 21 Days – C++ Problem Solving Day 18

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Day 18: Developing Programming Habits in 21 Days - C++ Problem Solving Day 18

Learn programming with Lao Ma by “leveling up and fighting monsters”! Exam Involved: Computer Society Programming Ability Level Certification (GESP) Activity Content: Provide real exam questions of different levels for students to choose for practice Preparation Advice: Choose corresponding questions based on your preparation level Additional Value: Can be used as preparation training for whitelist … Read more

Complete Collection of Programming Sample Questions for ICMC-C++ Junior Group

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Complete Collection of Programming Sample Questions for ICMC-C++ Junior Group

Complete Collection of Programming Sample Questions for ICMC-C++ Junior Group Sample Paper 1 1. Check for Uppercase Letters DescriptionInput a character and determine whether it is an uppercase English letter, i.e., one of A-Z. InputA single character. OutputIf it is an uppercase English letter, output YES; otherwise, output NO. Sample Input K Sample Output YES … Read more

Custom Rating Plugin in Qt C++

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Custom Rating Plugin in Qt C++

In practical projects, when we need to implement interfaces such as “five-star rating”, “user scoring”, and “evaluation star level”, the built-in controls of Qt often cannot directly meet the requirements: they lack animation effects, styles are difficult to fully customize, and icon replacement is not flexible. To achieve a more flexible and controllable UI, we … Read more

FPZIP: A Remarkable C++ Library for Multi-Dimensional Floating Point Array Compression

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FPZIP: A Remarkable C++ Library for Multi-Dimensional Floating Point Array Compression

FPZIP is a C/C++ library developed by Lawrence Livermore National Laboratory for the compression of multi-dimensional floating point arrays. It supports lossless compression of 1D, 2D, and 3D single precision (float) and double precision (double) arrays, and also allows lossy compression by specifying the number of precision bits to retain. The table below provides a … Read more

Confronting the Most Challenging “Memory Ghosts” in C/C++: Are You Still Using printf?

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Confronting the Most Challenging "Memory Ghosts" in C/C++: Are You Still Using printf?

Code XiaobianMillionFans CertifiedAccount By clicking follow, you not only gain a tool for finding resources but also an interesting soul ▶ ▶ ▶ Memory is a great helper for C/C++ programmers. One of the reasons we often say that C/C++ programs have higher performance is that they allow for manual memory management. However, memory issues … Read more

Common Methods of the C++ String Class

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Common Methods of the C++ String Class

In C++ programming, the string class is the core tool for handling strings, providing a rich set of methods to simplify string operations. Compared to C-style character arrays, the string class is safer, more convenient, and powerful, avoiding common memory management issues and boundary errors associated with C-style string processing. 1. Construction and Initialization (5 … Read more

C++ and Scratch: A Practical Approach to Random Data Generation and Statistics

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C++ and Scratch: A Practical Approach to Random Data Generation and Statistics

Step by step, one can reach a thousand miles.【Daily Practice】The goal is to provide various problems for practice and explanation as a reference to help everyone improve. Friends can use the explanations as a reference or leave comments to share their methods.///////////////////////////////////////////////////////Today, I want to tell everyone that programming is not limited by tools; as … Read more

Solution: C++ Basic Class Exercise 33

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Solution: C++ Basic Class Exercise 33

Supplementary Problem Link http://qsmw.org.cn/oj/contest/1062 Supplementary Problem Process 1. Exercise 33.1: 3721 Numbers Problem Analysis The problem requires outputting all <span>3721</span> numbers within 200, sorted in ascending order. This can be achieved using the <span>enumeration</span> knowledge learned in this lesson, by looping through all positive integers from <span>1~200</span> and checking if they meet the criteria. The … Read more

Behind the Popularity of dspx: C++ Acceleration + Redis Persistence for Maximum Performance

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Behind the Popularity of dspx: C++ Acceleration + Redis Persistence for Maximum Performance

Behind the Popularity of dspx: C++ Acceleration + Redis Persistence for Maximum Performance! 0x01 Introduction: Did you think Node.js could only write backend interfaces? It can also handle brain waves! Today, we won’t talk about React, Vue, or microservices, K8s. Let’s discuss something hardcore—Digital Signal Processing (DSP). You might be thinking, “Isn’t DSP something for … Read more