//创建新类型
typedef struct {
    
    int age;
    char name[20];//最大字节为 20
}Student;

    Student value2 = {1,*strcpy(value2.name, "证书")};
    /*
     把字符串拷贝到 char 里面去
     strcpy(value2.name, "证书");
    */
    // char 转 NSString
    NSString *str = [NSString stringWithUTF8String:value2.name];
    NSLog(@"%d---%@",value2.age,str);