算法笔记 3.2 codeup1935 查找学生信息

#include <stdio.h>
#include <string.h>
const int maxn = 1e3;
struct student{
    char id[];
    char name[];  //!!!!!!!
    char gender[];
    int age;
} stu[maxn];

int main(void){
    int n;
    while(scanf("%d", &n)!=EOF){
    for(int i=; i<n; i++){
        scanf("%s %s %s %d", &stu[i].id, \
        &stu[i].name, &stu[i].gender, &stu[i].age);
    }
    int m;
    scanf("%d", &m);
    while(m--){
        char test_id[];
        scanf("%s", test_id);
        int i;
        for( i=; i<n; i++){
            if(strcmp(stu[i].id, test_id)==){
                printf("%s %s %s %d\n", stu[i].id, \
                stu[i].name, stu[i].gender, stu[i].age);
            break;
            }
        }
        if (i==n) printf("No Answer!\n");

    }

}
}