For the GESP Level 2 exam: C++ 202412 Level 2 Digit SumThis problem is relatively simple, but there is a major difficulty:Many candidates can solve it, the debugging is correct, and the test cases pass, but after submission, it is incorrect and does not receive full marks. They repeatedly modify their code but cannot find … Read more
“From today on, study hard and make progress every day” Repetition is the best method for memory; spend one minute each day to remember the basics of C language. “C Language Beginner’s Essential Knowledge Notes Series – 100 Articles” 20. Logical Operators: AND, OR, NOT (&&, ||, !), very simple, but there are two mistakes … Read more
Introduction PLC programming and debugging is a critical and complex task. It acts as the “brain” of the entire automation system; any issues can directly affect the normal operation of the production line. As the core control device, the programming and debugging process of PLCs is often filled with challenges. Below, we will delve into … Read more
If you’re new to Python, do you often panic when your code throws an error? In fact, those red error messages are not to be feared; they are Python’s friendly way of telling you, “There’s a problem here.” Today, let’s talk about Python’s specialized “exception handling mechanism” that will help you not fear errors and … Read more
When learning about microcontrollers, one truly understands what the C language is and what it is used for. However, the application of C language in embedded systems is just a small part of its overall usage, and there are many other applications as well. We won’t discuss those here. Are we not making many mistakes … Read more
Here are some tips for C language macros to fill in the gaps. Macro Expansion Errors #define FUN(x) 1 + x * x int main() { printf("%d\n", 3*FUN(1)); return 0; } The macro expands to <span>3*1+1*1</span>, not <span>3*(1+1)</span>. To avoid this kind of error, always use parentheses in macros.<span>#define FUN(x) (1 + x * x)</span> … 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
When learning VC++, one often encounters the linker error LNK2001. This error is quite frustrating because, for programmers, the easiest errors to fix are compilation errors, and generally speaking, linker errors occur after compilation has already succeeded. There are many reasons for linker errors, especially LNK2001, which often leaves people puzzled. Without a deep understanding … Read more
1. Analysis of Reasons for Assembly Software Failure: This article uses the macro assembler A51 from the Keil C51 software package as the compiler. When writing assembly language for microcontrollers, it is important to pay attention to specific syntax. For detailed information, please refer to relevant reference books. Syntax errors can lead to assembly failures. … Read more