When looking through the CPython source code I came across a file called listobject.c.h. I’m not sure what this file extension ".c.h" is. The file has a mix of function prototypes and function definitions. Is there a reason to add .c to the extension instead of just making it a .h file? I couldn’t find… Read More What is a .c.h file?

I’m currently coding my implementation of the malloc() function, so I’m compiling with the following flags: -m64 -fPIC -pedantic -Wall -Wextra -Werror -nostdlib -ggdb3. For the time being, I’m compiling as an executable and not as a shared library. For my implementation I’m using the header files stddef.h stdint.h unistd.h, for the moment I need… Read More How to compile my version of Malloc in C?

I’m getting the following error when trying to build and run my C++ Project: ||=== Build: Debug in CS II (compiler: GNU GCC Compiler) ===| obj\Debug\main.o||In function ‘main’:| |30|undefined reference to ‘(anonymous namespace)::deleteRepeats(char*)’|| |error: ld returned 1 exit status| ||=== Build failed: 2 error(s), 0 warning(s) (0 minute(s), 0 second(s)) ===| My code is as… Read More CodeBlocks Compiler Giving "Undefined Reference" Error Over Usage of a Function Declared in My Header File

I’m a .NET programmer by day, and I’m learning C using Effective C by Robert Seacord. I’m on Chapter 5 – Control Flow, where it describes "goto" and I’m trying to compile "Listing 5-11: Using a goto chain to release resources". But type "object_t" is not defined. I assumed I could just find the definition… Read More Where is type "object_t" defined, in C?

Here is my code files VectorNumbeList.cpp #include <iostream> #include "VectorNumberList.h" void initialize() { vect = new int[10];} VectorNumberList.h #include <vector> #include <cstdlib> #include "NumberList.h" extern int* vect; size_t size_real; void initialize(); NumberList.h #ifndef NUMBER_LIST_H #define NUMBER_LIST_H #include <cstdlib> class NumberList { public: virtual void addNumberToList(int num) = 0; virtual void removeNumberFromFront() = 0; virtual void… Read More Getting multiple definition of 'size' and undefined reference to 'vect' errors, not sure how to solve, C++

In my C++ code, I recently updated a variable called bufferSignature from an unsigned int to a const string to be more descriptive. I need to initialize this variable on the creation of the VBufferObject with the return value from a function called GenerateAlphanumSignature() in the SceneManager namespace. The problem I’m having here is that… Read More Calling functions from header files as an initializer for const variables

IDE: VS code gcc version: 8.1.0 (x86_64-posix-seh-rev0, Built by MinGW-W64 project) I new in C , now I have three files: Get_para.h #ifndef _GETPARA_H_ #define _GETPARA_H_ extern double C; extern double dEarthAngularVelocity; … extern void calParameter(); #endif and Get_para.c, which is the implement of Get_para.h #include <math.h> #define _USE_MATH_DEFINES #define pi M_PI double C =… Read More Why I can't reference the implement of function defined in .h file?

I have a header file from the Pokemon Emerald decompilation codebase (https://github.com/pret/pokeemerald) which uses types defined in a different header file, but does not include that header, or include ANY header files for that matter, yet still the code somehow compiles. My neovim LSP says the u8 and bool8 types for example are unrecognised since… Read More How does this C code compile when it does not include the right header files?

I’m trying to check if my installation of libfyaml was successful since I have to use the library in a project. I built it from source and the installation went fine, but when I compile the test program using gcc test.c -o test, I get this error: /usr/bin/ld: /tmp/ccPsUk6E.o: in function `main’: test.c:(.text+0x14): undefined reference… Read More gcc: undefined reference to `fy_library_version'