5_12.cpp

#include <iostream>
#include <string>
using namespace std;
string name[50],num[50];
int n;
int main(){
	void input_data();
	void search(string find_name);
	string find_name;
	cout<<"please input number of this class:";
	cin>>n;
	input_data();
	cout<<"please input name you want to find:";
	cin>>find_name;
	search(find_name);
	return 0;
	}
	
void input_data(){
	int i;
	for(i=0;i<n;i++){
		cout<<"input name and NO. of student"<<i+1<<":";
		cin>>name[i]>>num[i];
			}
	}

void search(string find_name){
	int i;
	bool flag=false;
	for(i=0;i<n;i++){
		if(name[i]==find_name){
			cout<<name[i]<<" has been found, his number is: "<<num[i]<<endl;
			flag=true;
			break;
			
			}
		}
		if(flag==false) cout<<"can't find the name.";

	}