C/C++ 结构体 数组 函数传递

#include <stdio.h>
#include <stdlib.h>

struct student{
    int num;
    char str[20];
    double dec;
};

void scan(struct student stu[], int *n){
    scanf("%d", n);
    for(int i = 0; i < *n; ++i){
        scanf("%d%s%lf", &stu[i].num, stu[i].str, &stu[i].dec);
    }
}

void print(struct student stu[], int n){    
    printf("%d\n", n);
    for(int i = 0; i < n; ++i){
        printf("%d %s %lf\n", stu[i].num, stu[i].str, stu[i].dec);
    }
}

int main(){
    int n;
    struct student stu[10];

    scan(stu, &n);
    print(stu, n);
    
    return 0;
}
/*
3
20 字符串0 20.02
21 字符串1 21.12
22 字符串2 22.22
*/