7.3题解 | MAP #查找学生信息#

//结构体的student，记住字符串是string!  然而string 有别于char！ 不用[]
//Mymap[键]=实例化
#include<cstdio>
#include<string>
#include<map>
using namespace std;
//一步一步准备数据

struct Student {    //学生信息不用  键
    string name;    //注意，字符串直接string
    string gender;
    int age;
};

int main() {
    int n;
    scanf("%d", &n);
    map<string, Student>Mymap;

    
    for (int i = 0; i < n; i++) {
        Student A;
        char keyy[30];          //键
        char name[30];
        char gender[30];
        int age;
        scanf("%s %s %s %d", keyy, name, gender, &age);
        string name1 = name;
        string gender1 = gender;
        string keyy1=keyy;          //c-->c++
       
        A.age = age;            //1 C语言读取--- 2 c-->c++----3 Student 读入
        A.name = name1;
        A.gender=gender1;
        Mymap[keyy1] = A;

    }
    
    int nn;                         //查询
    scanf("%d",&nn);
    for (int i = 0; i < nn; i++) {
        char numbers[30];
        scanf("%s",numbers);
        string numbers1 =numbers;
        if(Mymap.find(numbers1)!=Mymap.end()){
            printf("%s %s %s %d\n",numbers1.c_str(),
                                Mymap[numbers1].name.c_str(),
                                Mymap[numbers1].gender.c_str(),
                                Mymap[numbers1].age);
        }
        else {
        printf("No Answer!\n");
        }



    }

}
// 64 位输出请用 printf("%lld")