#include<iostream>
#include<stdio.h>
#include<conio.h>

using namespace std;

struct mahasiswa{
	string nama[20];
	int umur[20];
};

int main(){
	mahasiswa a;
	int i=0, j, program;
	char input, hasil;

	mulai:
	cout<<"Program data mahasiswa\n";
	cout<<"1. input data mahasiswa\n";
	cout<<"2. output data mahasiswa\n";
	cout<<"select your program: ";
	cin>>program;
	system("cls");
	switch(program){
		case 1:	
		system("cls");
		do{	cout<<"mahasiswa ke "<<i+1<<endl;
			cout<<"Masukkan nama: ";
			getline(cin,a.nama[i]);
			cin.ignore(1000,'\n');
			cout<<"Masukkan umur: ";
			cin>>a.umur[i];
			i++;
			
			cout<<"input data lagi? (y/n): ";
			cin>>input;
		}while(input=='Y'||input=='y');
	
		cout<<"input data selesai\n";
		getch();
		system("cls");
		goto mulai;
		break;

		
		case 2:
		for(i=0;i<=j;i++){
			cout<<"Mahasiswa ke "<<i+1<<": \n";
			cout<<"Nama mahasiswa: "<<a.nama[i]<<endl;
			cout<<"Umur mahasiswa: "<<a.umur[i]<<endl;	
		}
		goto mulai;
	}
	return 0;
}