C language (structure) defines a user structure with the following fields:

( Structure ) Define a User Structure , Contains the following fields ：
id: A number , Different for each user id
email: email Address , General website users are allowed to email Address login
gender: Gender , male or Woman
QQ: QQ number
Write a function , stay User Find a... In the array id Of User( Knowledge point ： Structure array initialization ; Pointer access to member variables )
Function description ：
User* find (User* all, int n, int id);
among ,
all: Enter a User Array
n : The length of the array
id: What to look for id

typedef struct User
{ 
    

    int id;
    char *email;
    bool gender;
    char