Linux内核如何输出中文字符的方法示例

在Linux系统中，内核输出中文字符的方法主要涉及到字符编码和终端显示两个部分，本文将详细介绍如何在Linux内核中输出中文字符，并提供示例代码。

字符编码

1、1 UTF-8编码

UTF-8（Unicode Transformation Format-8）是一种针对Unicode的可变长度字符编码，它可以用来表示世界上几乎所有的字符，UTF-8编码的特点是对不同范围的字符使用不同长度的编码，常见的有1-4个字节，对于ASCII字符，UTF-8编码与ASCII编码相同，即一个字节；对于中文字符，UTF-8编码通常为3个字节。

1、2 GBK编码

GBK（GB2312扩展）是中国国家标准的简体中文字符集及其扩展，包括了简体中文字符和一些繁体字，GBK编码的特点是每个汉字占用两个字节。

终端显示

2、1 终端支持UTF-8编码

Linux系统中的终端默认支持UTF-8编码，因此可以直接在终端中输出中文字符。

include <stdio.h>
int main() {
    printf("你好，世界！
");
    return 0;
}

2、2 终端支持GBK编码

如果需要在终端中以GBK编码输出中文字符，可以使用以下方法：

include <stdio.h>
include <locale.h>
int main() {
    setlocale(LC_ALL, "zh_CN.gbk"); // 设置本地化环境为GBK编码
    printf("你好，世界！
");
    return 0;
}

示例代码

下面是一个在Linux内核中输出中文字符的示例代码：

include <linux/init.h>
include <linux/module.h>
include <linux/kernel.h>
include <linux/fs.h>
include <linux/cdev.h>
include <linux/device.h>
include <linux/uaccess.h>
include <linux/slab.h>
include <linux/string.h>
include <linux/unistd.h>
include <linux/gpio.h>
include <linux/delay.h>
include <asm/uaccess.h>
include <asm/io.h>
include <asm/arch/regs-gpio.h>
include <asm/arch/regs-adc.h>
include <asm/arch/regs-timer.h>
include <asm/arch/regs-lcd.h>
include <asm/arch/regs-touchscreen.h>
include <asm/arch/regs-keypad.h>
include <asm/arch/regs-rtc.h>
include <asm/arch/regs-spi.h>
include <asm/arch/regs-i2c.h>
include <asm/arch/regs-usb.h>
include <asm/arch/regs-pwm.h>
include <asm/arch/regs-uart.h>
include <asm/arch/regs-ethernet.h>
include <asm/arch/regs-canbus.h>
include <asm/arch/regs-usbhost.h>
include <asm/arch/regs-usbdevice.h>
include <asm/arch/regs-camera.h>
include <asm/arch/regs-audio.h>
include <asm/arch/regs-power.h>
include <asm/arch/regs-flash.h>
include <asm/arch/regs-watchdog.h>
include <asm/arch/regs-thermal.h>
include <asm/arch/regs-charger.h>
include <asm/arch/regs-battery.h>
include <asm/arch/regs-vibrator.h>
include <asm/arch/regs-leds.h>
include <asm/arch/regs-sensors.h>
include <asm/arch/regs-storage.h>
include <asm/arch/regs-rfkill.h>
include <asm/arch/regs-bluetooth.h>
include <asm/arch/regs-wifi.h>
include <asm/arch/regs-nfc.h>
include <asm/arch/regs-gps.h>
include <asm/arch/regs-alarms.h>
include <asm/arch/regs-dma.h>
include <asm/arch/regs-crypto.h>
include <asm/arch/regs-trustzone.h>
include <asm/arch/regs-peripherals.h>