用VS输出这份代码会在scanf_s的位置（就是输入名字那个位置）卡住？而且用scanf_s一直警告？

用VS输出这份代码会在scanf_s的位置（就是输入名字那个位置）卡住？而且用scanf_s一直警告？

#include
#include
#include
#define MAX 1000
#define MAX_NAME 20
#define MAX_SEX 20
#define MAX_PHONE 20
#define MAX_ADDRESS 20

void showmenu() {
    printf("\t1、添加联系人\n");
    printf("\t2、显示联系人\n");
    printf("\t3、查找联系人\n");
    printf("\t4、修改联系人\n");
    printf("\t5、删除联系人\n");
    printf("\t6、清空联系人\n");
    printf("\t0、退出通讯录\n");
}
typedef struct people {
    char name[MAX_NAME];
    int age;
    char iphone[MAX_PHONE];
    char sex[MAX_SEX];
    char ip[MAX_ADDRESS];
};
struct personBook {
    struct people arr[MAX];
    int size;
};
void input(struct personBook* p1) {
    memset(p1->arr, 0, sizeof(p1->arr));
    p1->size = 0;
}
void getperson(struct personBook* per) {
    if (per->size == MAX) {
        printf("通讯录已满！！！无法添加！！！");
        return;
    }
    else {
        printf("请输入联系人姓名：");
        scanf_s("%s", per->arr[per->size].name);
        printf("请输入联系人年龄：");
        scanf_s("%d", &per->arr[per->size].age);
        printf("请输入联系人电话：");
        scanf_s("%s", per->arr[per->size].iphone);
        printf("请输入联系人性别：   1----男       2----女  ");
        int m = 0;
    qu:
        scanf_s("%d", &m);
        if (m == 1) {
            *per->arr[per->size].sex = '男';
        }
        else if (m == 2) {
            *per->arr[per->size].sex = '女';
        }
        else {
            printf("输入错误！！！请重新输入！！！");
            goto qu;
        }
        printf("请输入联系人地址：");
        scanf_s("%s", per->arr[per->size].ip);
        printf("添加成功了！！！！");
        per->size++;
    }
}
int main() {
    int a = 0;
    struct personBook p1;
    input(&p1);
    while (1) {
        showmenu();
        scanf_s("%d", &a);
        switch (a) {
        case 1:
            getperson(&p1);
        case 2:
        case 3:
        case 4:
        case 5:
        case 6:
        case 0:
            printf("欢迎下次使用！！！");
            return 0;
        }
    }
    return 0;
}

img

name后面再加个参数MAX_NAME

供参考：https://baike.baidu.com/item/scanf_s/443572?fr=aladdin