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Unique shared library issues

Problem Description Recently, I encountered a link error when I tried to link a self-built C language shared library to a local project, and I encountered a link error, prompting "Undefined reference". The error message is as follows: /bin/ld:/tmp/cchb7mj8.o:infunction`sdl_main':main.c:(.text 0x3c):undefinedreferenceto`sdl_enterappmaincallbacks'...(other similar undefined references)..collect2:error:ldreturned1exitstatusmake:***[

Apr 03, 2025 pm 08:00 PM

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C Programmer &#s Undefined Behavior Guide

Exploring Undefined Behaviors in C Programming: A Detailed Guide This article introduces an e-book on Undefined Behaviors in C Programming, a total of 12 chapters covering some of the most difficult and lesser-known aspects of C Programming. This book is not an introductory textbook for C language, but is aimed at readers familiar with C language programming, and explores in-depth various situations and potential consequences of undefined behaviors. Author DmitrySviridkin, editor Andrey Karpov. After six months of careful preparation, this e-book finally met with readers. Printed versions will also be launched in the future. This book was originally planned to include 11 chapters, but during the creation process, the content was continuously enriched and finally expanded to 12 chapters - this itself is a classic array out-of-bounds case, and it can be said to be every C programmer

Apr 03, 2025 pm 07:57 PM

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Meson: Use out-of-nothing GIT projects as dependencies

Meson project dependency processing: Cleverly solves the dependency problem of Git project without Meson.build files. Many excellent Git projects lack Meson.build files, which poses challenges for developers who use Meson build systems. This article will introduce a way to solve this problem by creating a patch file and successfully add a Git project without the Meson.build file to your Meson project as a subproject. Suppose you need to add the benhoyt/ht project (which does not have a Meson.build file) to your project as a subproject. You can use Meson's wrap mechanism, but you need to manually add the Meson.build article

Apr 03, 2025 pm 07:54 PM

git 2025

C test coverage in C IS will teach you how to use it

Software Test Coverage: The key to ensuring code quality is in software development, testing is crucial, it ensures that the software runs as expected. The test coverage further ensures the comprehensiveness of the test and ensures that all branches and paths of the code are tested. Many modern programming languages provide libraries or tools to generate test coverage reports, but did you know that C also has a "native" tool? Let's start with a simple C function that returns ±42: #includeinreturn_42(boolret_neg){if(ret_neg)return-42;return42;}

Apr 03, 2025 pm 07:51 PM

c语言 ai 2025

Network service installation

Promotion Conference: This SAE (Business Learning Situation) project aims to develop a real-time "CAT" network discussion application based on a client-server architecture. The application allows multiple clients to connect to a central server and communicate in real time. The following figure out how to overview socket functions: Resource configuration: Programming language: C language version control: Code sharing using distributed Github Development environment: VisualStudioCode, and communicate with WSL Operating system: Ubuntu under Windows (implemented through WSL) Project members: 3 people Project duration: 12 hours Project specification: This SAE project is a client implemented in a local network

Apr 03, 2025 pm 07:48 PM

git windows 操作系统 2025

Pointer, a weird beast, suitable for beginners and beyond

For beginners in C/C programming, pointers are one of the most difficult concepts to understand. Many students are troubled by this, and many developers try to avoid using pointers. However, understanding pointers is crucial, so let's start with the basics. What is a pointer? A pointer is a data type, similar to int, float, etc. The syntax for declaring a pointer is to add * after the type name. For example, a pointer to an integer is declared as int*, and a pointer to a custom structure mytype is declared as mytype*. The pointer points to the memory address of the variable. int* stores the address of integer variables, and mytype* stores the address of mytype variables. Example: #includeintmain(){

Apr 03, 2025 pm 07:39 PM

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Issues with Dev-C version

Dev-C 4.9.9.2 Compilation Errors and Solutions When compiling programs in Windows 11 system using Dev-C 4.9.9.2, the compiler record pane may display the following error message: gcc.exe:internalerror:aborted(programcollect2)pleasesubmitafullbugreport.seeforinstructions. Although the final "compilation is successful", the actual program cannot run and an error message "original code archive cannot be compiled" pops up. This is usually because the linker collects

Apr 03, 2025 pm 07:33 PM

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The art of making plans

C programming challenges and fun Learning a programming language is not easy, and I have never gotten into C. Although it seemed interesting, I decided to write a blog to document my learning journey. You may be curious why I chose C? To be honest, I've never been involved in large-scale project development, so it's going to be a challenging experience, like all software development projects. I will continue to update the progress in the future. The charm of C is no accident. C still has a huge loyal user base. It is known as the holy grail in the field of programming and a challenge that every programmer should try. I was deeply attracted by C and wanted to experience it myself. Rather than doing boring exercises through the compiler, I chose a real project to learn it. >I believe this will

Apr 03, 2025 pm 07:27 PM

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In c language: What does it mean

The meaning of colon (':') in C language: conditional statement: separating conditional expressions and statement block loop statement: separating initialization, conditional and incremental expression macro definition: separating macro name and macro value single line comment: representing the content from colon to end of line as comment array dimension: specify the dimension of the array

Apr 03, 2025 pm 07:24 PM

c语言

What does a mean in C language

A in C language is a post-increase operator, and its operating mechanism includes: first obtaining the value of the variable a. Increase the value of a by 1. Returns the value of a after increasing.

Apr 03, 2025 pm 07:21 PM

c语言

= What does it mean in C language

The = operator in C language is called a composite assignment operator. It adds the value of a variable or expression and stores it in that variable. Its syntax is variable = expression, which is equivalent to variable = variable expression.

Apr 03, 2025 pm 07:18 PM

c语言

How to output only the first two decimal places in C language

In C, you can use the following method to output the first two decimal places of floating point numbers: use the format string ("%.2f") of the printf() function. Use the sprintf() function to convert the floating point number into a string, and then use the sscanf() function to parse the string and extract the first two decimal places.

Apr 03, 2025 pm 07:15 PM

c语言字符串解析

How to use C language link list

In C language, a linked list is a dynamic data structure composed of nodes connected to each other, each node contains data and a pointer to the next node. The use of linked lists includes operations such as creating linked lists, traversing linked lists, inserting nodes and deleting nodes.

Apr 03, 2025 pm 07:12 PM

c语言

Scanf means in c language

scanf is used in C language to read input from the user and store it in variables. The specific working principle is as follows: format the string to specify the data format. The scanf function extracts data from the input stream. The data is stored in the corresponding variable. The return value indicates the number of variables that were successfully read.

Apr 03, 2025 pm 07:09 PM

c语言