What does %s mean in c language

In C language, %s represents a formatted string placeholder, used to insert string values: when printf or scanf encounters %s, it will look for the string pointer that follows it parameter. This pointer points to the string to be printed or read. If width is specified, the function prints or reads the specified number of characters.

%s means in C language

In C language, %s is a formatted string placeholder used to insert string values ​​into printf, scanf, and other input/output functions.

Detailed description

%s Placeholders work as follows:

• Whenprintf When the or scanf function encounters %s, it looks for the string pointer argument immediately following it.
• This pointer points to the string to be printed or read.
• If width is specified in the format string, the function will print or read the specified number of characters.

Example

The following code snippet demonstrates how to use the %s placeholder:

<code class="c">#include <stdio.h>

int main() {
    char name[20];  // 声明一个字符数组来存储字符串

    // 获取用户的姓名
    printf("请输入你的姓名：");
    scanf("%s", name);  // `%s` 读取输入并将其存储在 `name` 数组中

    // 打印用户姓名
    printf("你的姓名是：%s", name);  // `%s` 打印存储在 `name` 数组中的字符串

    return 0;
}</code>

in In this example:

• scanf("%s", name); Reads input from the user and stores it in the name character array middle.
• printf("Your name is: %s", name); Use %s placeholder to print the array stored in name string in .

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