In C language, the steps to write the "Hello, world!" program include: creating the source file "hello.c". Includes the header file
. Define the main function main(). Use printf() to print "Hello, world!". Returning 0 indicates that the program executed successfully.
Write "Hello, world!" in C language
Write "Hello, world in C language !" The steps of the program are as follows:
1. Create the source file
Use a text editor to create a text file named "hello.c".
2. Include the header file
At the beginning of the source file, include the header file <stdio.h></stdio.h>
of the standard input/output library.
#include <stdio.h>
3. Define the main function
The entry point of the C program is the main
function, which is responsible for executing the program logic.
int main() {
4. Output "Hello, world!"
Use the printf
function to output "Hello, world!" to the console.
printf("Hello, world!\n");
5. Return 0
main
The function needs to return an integer value, 0 means the program is successfully executed.
return 0; }
Full code:
#include <stdio.h> int main() { printf("Hello, world!\n"); return 0; }
Compile and run the program
Use a C compiler (such as GCC or Clang) Compile the "hello.c" file. Then, run the executable file (such as "./hello"). The console will print "Hello, world!".
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