2016年9月2日 · @JohnBollinger: The C language was defined by primarily by precedent prior to C89, and the language which became popular throughout the 1990s was a combined superset of C89 and useful precedents which filled in the gaps thereof.

2008年10月5日 · Import in gcc: The import in gcc is different from the import in VC++. It is a simple way to include a header at most once only. (In VC++ and GCC you can do this via #pragma once as well) The #import directive was officially undeprecated by the gcc team in version 3.4 and works fine 99% of the time in all previous versions of gcc which support

2017年10月8日 · Let's say you want to compile foo.c that uses a header file called bar.h residing in /where/bar/lives/include/ directory, and a library called libbar.a in /where/bar/lives/lib/ directory, then in majority of C compilers you can use -I flag and -L flags to make it possible to include and link the right bits into your project:

2012年5月4日 · The problem seems to be that sayHello.c got compiled into an object file called sayHello.obj, and main.c (also including all the source text from sayHello.c), got compiled into main.obj, and so both .obj files got a copy of all the external symbols (like non-static function definitions) from sayHello.c.

@dave - #import is an Objective-C addition to the preprocessor. GCC just supports it in C and C++ source files as well, although they officially suggest not using it in C or C++ in favor of portable, traditional header guards. All Objective-C preprocessors must include #import, however. –

2011年11月6日 · 1) Did you mean functions.hpp? C/cpp files should not be #included unless you know very well what you're doing. 2) Add the location of the file to the custom include path in the project properties, or use the include "foo" format instead …

2021年2月26日 · import std; Improvement in compilation time. According to ISO C++23, there is also import std.compat;. Differences between the two are as follows (extracted from P2465R3): import std; imports everything in namespace std from C++ headers (e.g. std::sort from <algorithm>) and C wrapper headers (e.g. std::fopen from <cstdio>).

2008年10月24日 · You can use the gcc compiler in linux to link two c file in one output. Suppose you have two c files one is 'main.c' and another is 'support.c'. So the command to link these two is. gcc main.c support.c -o main.out By this two files will be linked to a single output main.out To run the output the command will be./main.out

2022年10月30日 · You can include the .c files, no problem with it logically, but according to the standard to hide the implementation of the function but to provide the binaries, headers and source files techniques are used, where the headers are used to define the function signatures where as the source files have the implementation.

2013年9月23日 · Because Objective-C is a superset of the C programming language, the #import state‐ ment is a minor refinement upon C’s #include statement. The #include statement is very simple; it copies everything it finds in the included file into your code during compilation. This can sometimes cause significant problems.