Ctrl Shift P
输入：snipp,选配置用户代码片段，新建全局代码片段文件，修改下列模板：

{
	// Place your 全局 snippets here. Each snippet is defined under a snippet name and has a scope, prefix, body and 
	// description. Add comma separated ids of the languages where the snippet is applicable in the scope field. If scope 
	// is left empty or omitted, the snippet gets applied to all languages. The prefix is what is 
	// used to trigger the snippet and the body will be expanded and inserted. Possible variables are: 
	// $1, $2 for tab stops, $0 for the final cursor position, and ${1:label}, ${2:another} for placeholders. 
	// Placeholders with the same ids are connected.
	// Example:
	// "Print to console": {
	// 	"scope": "javascript,typescript",
	// 	"prefix": "log",
	// 	"body": [
	// 		"console.log('$1');",
	// 		"$2"
	// 	],
	// 	"description": "Log output to console"
	// }
	"C header": {
		"scope":"c, cpp",
		"prefix": "header",
		"body": [
			"#include <sys/types.h>",
			"#include <sys/stat.h>",
			"#include <unistd.h>",
			"#include <stdlib.h>",
			"#include <stdio.h>",
			"#include <fcntl.h>",
			"",
			"int main() {",
			"\t$0",
			"\treturn 0;",
			"}"
		]
	}
}