By running Windows command-line compiler C language source file

By running Windows command-line compiler C language source file

1. Check the C language compiler environment is configured successfully

• win + r input cmd open dos window, enter the command gcc -vto see if there is content output

  • If you have the following output, the configuration was successful, the next step can be carried out

    

  • If you enter this command, the following output dos window 'g++' 不是内部或外部命令，也不是可运行的程序或批处理文件。then the configuration fails compilation environment, needs to be reconfigured

  • Specific configuration environment variable can refer to the jdk environment variable configuration process, links to articles , the difference between them is the need to download something different, here to download content for mingW, additional configuration steps are pretty much the same

    • mingW Download
    • Extraction code: elx4

2. New C language source file

   • File name helloWorld.c, note the name suffix is ​​.c

   • Code source file is

     #include <stdio.h>
     int main()
     {
     	printf("Hello World!");
     	return 0;
     }
     

     
     

3. Compile and execute source file

   • Compilation (actually compiled C language program is divided into several stages, convenience, here referred to as the compiler)

     • Enter the following command gcc helloWorld.cto compile the source files, after compiling we will find the source files in the folder where the file helloWorld.c will produce a file named a.exe, the result is after the file compiled

       

   • run

     • We can directly enter ato run the program.