用C语言写一个函数，要求使用switch语句解析typedef struct { unsigned char head1; unsigned char head2; unsigned char len; unsigned char cmdid; unsigned char data[255]; unsigned char checksum; unsigned char tail; } Frame;这个结构体中cmdid

的取值范围是-255，现在需要写一个函数，根据传入的cmdid值返回对应的命令名称，如果cmdid不在-255的范围内，则返回"未知命令"。

以下是示例代码：

#include <stdio.h>

typedef struct {
    unsigned char head1;
    unsigned char head2;
    unsigned char len;
    unsigned char cmdid;
    unsigned char data[255];
    unsigned char checksum;
    unsigned char tail;
} Frame;

char* get_cmd_name(unsigned char cmdid) {
    char* cmd_name;
    switch (cmdid) {
        case :
            cmd_name = "命令";
            break;
        case 1:
            cmd_name = "命令1";
            break;
        // 其他命令的case语句
        case 255:
            cmd_name = "命令255";
            break;
        default:
            cmd_name = "未知命令";
            break;
    }
    return cmd_name;
}

int main() {
    Frame frame;
    frame.cmdid = 10;
    printf("命令%d对应的名称是%s\n", frame.cmdid, get_cmd_name(frame.cmdid));
    return ;
}