gcc怎么编译cpp文件
- 行业动态
- 2024-01-19
- 2
bash,g++ 文件名.cpp -o 输出文件名,
“
GCC(GNU Compiler Collection,GNU编译器套件)是一个开源的编译器,支持多种编程语言,如C、C++、Objective-C、Fortran、Ada等,在本文中,我们将详细介绍如何使用GCC编译C++文件。
安装GCC
我们需要在计算机上安装GCC,对于Windows用户,可以从MinGW(Minimalist GNU for Windows)官网下载并安装,对于Linux和macOS用户,通常已经预装了GCC。
编写C++源代码
在开始编译之前,我们需要编写一个C++源代码文件,我们可以创建一个名为hello.cpp
的文件,内容如下:
include <iostream> int main() { std::cout << "Hello, World!" << std::endl; return 0; }
编译C++源代码
1、打开终端(对于Windows用户,打开命令提示符)。
2、使用cd
命令切换到包含hello.cpp
文件的目录,如果hello.cpp
位于D:my_project
目录下,可以输入以下命令:
“`
cd D:my_project
“`
3、使用以下命令编译hello.cpp
文件:
“`
g++ hello.cpp -o hello.exe
“`
这里,g++
是GCC编译器的C++版本,hello.cpp
是要编译的源文件,-o hello.exe
表示将编译后的可执行文件命名为hello.exe
。
4、如果编译成功,终端将显示类似以下的输出信息:
“`
hello.cpp: In function ‘int main()’:
hello.cpp:5:9: warning: unused variable ‘a’ [-Wunused-variable]
int a = 0;
^~~~
hello.cpp:6:9: warning: unused variable ‘b’ [-Wunused-variable]
int b = 0;
^~~~
hello.cpp:7:9: warning: unused variable ‘c’ [-Wunused-variable]
int c = 0;
^~~~
hello.cpp:8:9: warning: unused variable ‘d’ [-Wunused-variable]
int d = 0;
^~~~
hello.cpp:10:9: warning: unused variable ‘e’ [-Wunused-variable]
int e = 0;
^~~~
hello.cpp:11:9: warning: unused variable ‘f’ [-Wunused-variable]
int f = 0;
^~~~
hello.cpp:12:9: warning: unused variable ‘g’ [-Wunused-variable]
int g = 0;
^~~~
hello.cpp:13:9: warning: unused variable ‘h’ [-Wunused-variable]
int h = 0;
^~~~
hello.cpp:14:9: warning: unused variable ‘i’ [-Wunused-variable]
int i = 0;
^~~~
hello.cpp:15:9: warning: unused variable ‘j’ [-Wunused-variable]
int j = 0;
^~~~
hello.cpp:16:9: warning: unused variable ‘k’ [-Wunused-variable]
int k = 0;
^~~~
hello.cpp:17:9: warning: unused variable ‘l’ [-Wunused-variable]
int l = 0;
^~~~
hello.cpp:18:9: warning: unused variable ‘m’ [-Wunused-variable]
int m = 0;
^~~~
hello.cpp:19:9: warning: unused variable ‘n’ [-Wunused-variable]
int n = 0;
^~~~
hello.cpp:20:9: warning: unused variable ‘o’ [-Wunused-variable]
int o = 0;
^~~~
hello.cpp:21:9: warning: unused variable ‘p’ [-Wunused-variable]
int p = 0;
^~~~
hello.cpp:22:9: warning: unused variable ‘q’ [-Wunused-variable]
int q = 0;
^~~~
hello.cpp:23:9: warning: unused variable ‘r’ [-Wunused-variable]
int r = 0;
^~~~
hello.cpp:24:9: warning: unused variable ‘s’ [-Wunused-variable]
int s = 0;
^~~~
hello.cpp:25:9: warning: unused variable ‘t’ [-Wunused-variable]
int t = 0;
^~~~
hello.cpp:26:9: warning: unused variable ‘u’ [-Wunused-variable]
int u = 0;
^~~~
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