大佬球助啊，这个怎么写啊？？？

Question

补充find函数，其功能为在数组中查找某个id的User，输出其qq号码。（注意：部分代码已给出且不可删改）
#include
#include
using namespace std;
struct User
{
int id;
char email[16];
char gender[5];
int qq;
};
int find(User* message, int n, int id)
{

int m;
/************在这里补充代码************/

/**************************************/
return m;
}
int main()
{
int result;
User a[3] = {
{123,"[e-mail]","boy",2018},
{124,"[e-mail]","girl",2020},
{125,"[e-mail]","boy",2019}
};
result=find(a, 3, 124);
cout<<result<<endl;

FILE *fp;
fp = fopen("res.txt","w");
fprintf(fp,"%d",result);
return 0;

}

Answer 1

int find(User* message, int n, int id)
{
    int m;
    /************在这里补充代码************/
    if(message)
        for(int i=0;i<n;i++)
            if(id == message[i].id)
                m = message[i].qq;
    /**************************************/
    return m;
}