tugas cpp 6

#include <iostream.h>
#include <conio.h>
#include <stdio.h>
main()
{
char nama[50],jurusan[20],nim[8];
int nilai1,nilai2,nilai3,nilai4,nilai5;
cout<<"\tPROGRAM NILAI KIMIA"<<endl;
cout<<"==========================="<<endl;
cout<<"NIM            = ";cin>>nim;
cout<<"Nama            = ";gets(nama);
cout<<"nilai absen        =";cin>>nilai1;
cout<<"nilai tugas        =";cin>>nilai2;
cout<<"nilai ulangan        =";cin>>nilai3;
cout<<"nilai praktek    =";cin>>nilai4;

nilai5= (nilai1+nilai2+nilai3+nilai4)/4;
                  if(nilai5>90)
                  {
                  cout<<"nilai akhir        ="<<nilai5<<endl;
                  cout<<"GRADE            =A\n";
                  cout<<"keterangan        =sangat baik";
                  }
                  else
                  if(nilai5>80)
                  {
                  cout<<"nilai akhir        ="<<nilai5<<endl;
                  cout<<"GRADE             =B\n";
                  cout<<"keterangan            =baik";
                  }
                  else
                  if(nilai5>70)
                  {
                  cout<<"nilai akhir         ="    <<nilai5<<endl;
                  cout<<"GRADE                =C\n";
                  cout<<"keterangan              =cukup";
                  }
                  else
                  {
                  cout<<"Nilai akhir    ="<<nilai5<<endl;
                  cout<<"GRADE    =D\n";
                  cout<<"keterangan    =kurang";
                  }
                  getch();
                  }

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