“Hello World!“ in C | HackerRank

Objective
In this challenge, we will learn some basic concepts of C that will get you started with the language. You will need to use the same syntax to read input and write output in many C challenges. As you work through these problems, review the code stubs to learn about reading from stdin and writing to stdout.
Task
This challenge requires you to print on a single line, and then print the already provided input string to stdout. If you are not familiar with C, you may want to read about the printf() command.
Example

The required output is:
Hello, World!
Life is beautiful
Function Descriptio
Complete the main() function below.
The main() function has the following input:
string s: a string
Prints
*two strings: * “Hello, World!” on one line and the input string on the next line.
Input Format
There is one line of text, .
Sample Input 0
Welcome to C programming.
Sample Output 0
Hello, World!
Welcome to C programming.

#include<stdio.h>
int main ()
{
    
    
    char s1[100] = "Hello, World!" ;
    char s2[100] ;
    scanf("%[^\n]",s2);
    printf("%s\n%s\n",s1,s2);
    return 0;
}

这里使用了%[]格式，[]里面用^+我们需要停止的字符
带空格的字符串输入