Daily C++ Challenge – Day 726

Today is the 726th day of learning programming with a slightly cold rain! Hello, everyone! This is the GESP Level 4 Examination question. Day 726 GESP Level 4 Examination in March 2025 True or False Question 5: When passing a two-dimensional array as a function parameter, all dimensions must be explicitly specified. Answer: False START … Read more

MiniTest: A Lightweight C++ Unit Testing Framework

Click the blue text to follow immediately Introduction MiniTest is a lightweight C++ unit testing framework that provides assertion testing, parameterized testing, grouped testing, performance testing, and Mock (mock objects), suitable for the unit testing needs of small projects. Features of this framework: Lightweight: No third-party dependencies, suitable for embedded systems, CLI tools, etc. Easy … Read more

In-Depth Analysis of C++ Exception Handling Mechanism: Best Practices, Performance Analysis, and Challenges

1. Exception Handling Practices When writing C++ code, unexpected errors and exceptions may occur. To make our code more robust and reliable, we need to use the exception handling mechanism to handle these situations. 1. Writing Exception Handling in High-Quality Code When writing high-quality code, we should follow some guidelines to design and write exception … Read more

The 8-Year-Old Boy Who Lost Three Times in C++ Competitions Finally Turned the Tide

(Zero) On the afternoon of March 9, 2025, it was the day of the STEMA exam. This exam is separate from the Lanqiao Cup. That day, because Zhuangzhuang’s parents were quite busy, his mother set up the tablet for him to monitor and then went to work. Later, when the exam was over, his mother … Read more

C++ One Cycle Problem: Rest Time (GESP Level 1 Real Exam Question)

June 2024:Rest Time 01 Source of the question Luogu NetworkB4000 , Xin’ao Open Class Problem Solving Approach 02 1. Time Conversion: Convert the start time’s hours, minutes, and seconds into total seconds. Then add the study seconds <span><span>k</span></span>, resulting in the total seconds for the rest time. 2. Time Restoration: Convert the total seconds back … Read more

C++ Basics (GESP Level 1)

In this article, I will guide you through the content of GESP Level 1, helping you to successfully pass the exam.” 01 — Level 1 Knowledge Points “The above image is from the GESP official website gesp.ccf.org.cn” Looking ahead, you will see the first two knowledge points, which are secondary focuses. A dedicated article will … Read more

Detailed Explanation and Practice Questions for C++ GESP Level 5: Master These and You’re Set

1. Detailed Explanation of Core Topics for C++ GESP Level 5 According to the official GESP syllabus and analysis of past exam questions, the Level 5 exam mainly covers the following knowledge points: 1. Elementary Number Theory Core Content: Prime number determination (Sieve of Eratosthenes, linear sieve), greatest common divisor (Euclidean algorithm), congruences and modular … Read more

Detailed Explanation and Practice Questions for C++ GESP Level 7: Master These and You’re Set

1. Mathematical Library Functions Content: Trigonometric functions (sin, cos, tan), logarithmic functions (log, log10), exponential functions (exp, pow). Key Points: Radian calculations, differences in precision between double and float. 2. Complex Dynamic Programming Content: Two-dimensional dynamic programming (grid paths), interval dynamic programming (stone merging), longest subsequence (LIS/LCS), rolling array optimization. Difficult Points: Derivation of state … Read more

Gazebo: A Powerful C++ Library for Robotics Simulation

Gazebo is a powerful simulation library based on C++, primarily used for the development and testing of robotics. It acts like a virtual laboratory, allowing developers to build various scenarios and test robot behaviors without worrying about damaging actual hardware. Gazebo offers a rich set of features, such as model generation, physics simulation, and sensor … Read more

In-Depth Analysis: Design and Implementation of C++ Memory Pools

1. Introduction 1.1 Importance of Memory Management In computer science, memory management is a crucial part of operating systems. It is responsible for managing the main memory (primary storage) of the computer, which is the storage space directly accessible by the CPU, including physical memory and all available virtual memory. The main tasks of memory … Read more