题解 | #查找学生信息#

#include<cstdio>
#include<string>
#include<map>
using namespace std;
struct Student{
	string name;
	string gender;
	int age;
	};
int main(){
	int n;
	scanf("%d",&n);
	map<string,Student> infoMap;
	for(int i = 0; i < n; ++i){
		char num[30];
		char name[30];
		char gender[30];
		int age;
		scanf("%s%s%s%d",num,name,gender,&age);
		//把字符串信息转化为想要的信息（C++风格字符串类型）
		string numstr = num;//C->C++
		Student student;
		student.name = name;
		student.gender = gender;
		student.age = age;
		infoMap[numstr] = student;
		}
		int m;
		scanf("%d",&m);
		for(int i = 0; i < m; ++i){
			char num[30];
			scanf("%s",num);
			string numstr = num;//C-->C++
			if(infoMap.find(numstr) != infoMap.end()){
				//找到键值对
				printf("%s %s %s %d\n",numstr.c_str(),
					infoMap[numstr].name.c_str(),
					infoMap[numstr].gender.c_str(),
					infoMap[numstr].age);
				}
			else{
				printf("No Answer!\n");
				}
			}
		system("pause");
	}