Program Input NIM, NAMA, & PRODI C++

#include <iostream>
#include <stdio.h>   
#include <conio.h> 
using namespace std;
main()
{
 float a;      //deklarasi variabel//
 char b[30],c[50];   //deklarasi variabel//
 
 
  cout<<"penggunaan operator aritmatika\n";
  cout<<"www.ibmb.ac.id\n\n";

  cout<<"==============LOG IN==============\n";
  cout<<"inputkan nama, NIM, dan Prodi anda\n";
  cout<<"NIM = ";
  cin>>a;     //memasukkan data NIM//
  cout<<"Nama = ";
  cin>>b;     //memasukkan data nama//
  cout<<"Prodi = ";
  cin>>c;     //memasukkan data prodi//
  cout<<"==================================\n";
  cout<<"==================================\n";
  cout<<"Data Anda:\n"; //menampilkan hasil data//
  cout<<"NIM = "<<a<<endl;
  cout<<"Nama = "<<b<<endl;
  cout<<"Prodi = "<<c<<endl;
 getche();
}