Ввод и поиск информации о книгах

#include <cstdlib>
#include <iostream>
 
using namespace std;
struct Infkniga
{
char name[50];
int number;
int pages;
       };
Infkniga InputKniga(Infkniga *Massive,int n);
void OutputKniga(Infkniga *Massive,int n);
void Searchnumber (Infkniga *Massive, int n);
 
Infkniga InputKniga(Infkniga *Massive,int n)
{
     for(int i=0;i<n;i++)
     {
             cout << "Input Kniga#"<< i+1<< "name:"; cin >>Massive[i].name;
             cout << "Input Kniga#"<< i+1<< "number:"; cin >>Massive[i].number;
             cout << "Input Kniga#"<< i+1<< "pages:"; cin >>Massive[i].pages;
             }
     }
 
Infkniga OutputKniga(Infkniga *Massive,int n)
{
     cout << endl << "Name" << "     " << "Number" << "      " << "Pages" << endl;
     for(int i=0;i<n;i++)
     {
             cout << Massive[i].name <<"     " << Massive[i].number <<"      "<< Massive[i].pages << endl;
             }
     }
     
Infkniga Searchnumber (Infkniga *Massive, int n)
{ 
      char name[50];
      cin >> name;
      for(int i=0 ; i < n ; i++)
{
if(strcmp(name,Massive[i].name)==0)
{
     return Massive[i];                                    
        }  
       
}
}
 
 
int main()
{   int n;
    int input;
    cout << "Choose an option:" << endl;
    cout << "1.Add information about books"<<endl;
    cout << "2.View the information about books" << endl;
    cout << "3.Seach number of a book by it's name" << endl;
    cout << "4.Exit the program"<< endl;
    Infkniga *Massive=new Infkniga[n];
    do{
    cout << "enter a choise" << endl;
    cin >> input;
    switch ( input )
    {
    case 1:
         {
     cout << "Input n:";
    cin >> n;
    InputKniga(Massive ,n);  
 break;}
 case 2:
      {
    OutputKniga(Massive, n);
    break;}
    case 3:
         {
       Infkniga kn = Searchnumber (Massive,n);
if(kn.number!=0)
cout << kn.number << endl;
else cout <<"not found" << endl;
break;}
case 4:
     {
     cout << "the end"<< endl;
     break;}
     default:
     cout << "Wrong actions from you"<<endl;
     break;
}
}while(input!=4);
return 0;
}