Program Nama Nilai Grade

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

main()
{
		string nama[5];
      int nilai[5];
      char grade[5];
      int i;


      i=0;
      while(i<5)
      {
      	cout<<"Nama : ";
         cin>>nama[i];
         cout<<"Nilai: ";
         cin>>nilai[i];

         if(nilai[i]>=86)
         	grade[i]='A';
         else
         if(nilai[i]>=76)
         	grade[i]= 'B';
         else
         if(nilai[i]>=66)
         	grade[i]= 'C';
         else
         if(nilai[i]>=56)
         	grade[i]= 'D';
         else
         if(nilai[i]>=46)
         	grade[i]= 'E';

            i++;//i=i+1
      }

      cout<<"---------------------------\n";
      cout<<"nama\tnilai\tgrade\n";
      cout<<"===========================\n";
      i=0;
      while(i<5)


      {
      	cout<<nama[i]<<"\t";
         cout<<nilai[i]<<"\t";
         cout<<grade[i]<<"\t";
         cout<<"\n";
         i++;
         cout<<"---------------------------\n";

      }
      getch();