在线编译器 C

#include <stdio.h> int main() { printf("Hello World!!!!!\n"); return 0; }
This code prints "Hello World!!!!!" to the screen and then exits. It is a simple introductory program that demonstrates the basic structure of a C program: including a header, defining the main function, using printf to output text, and returning a value to indicate success.

- The program uses `printf` to display a message. Make sure you understand that `\n` at the end creates a new line after the text.
- The `return 0;` statement is used to indicate that the program finished without errors. In C, returning a non-zero value typically signals an error.