Program Menghitung IPK dengan C++

Hai disini penulis mau bagi kodingan tentang C++

#include<iostream.h>

#include<stdio.h>

#include<iomanip.h>

#include<conio.h>

konversi (int x);

main()

{int max,uas[10],uts[10],a[10],t[10];

char ipk[10];

char nama[30][30],mk[20][20],nim[15][15];

cout<<"Jumlah Data Masukan (max=10): ";cin>>max;

for(int i=1;i<=max;i++)

{cout<<"\nData ke-"<<i<<"";

 cout<<"\nNIM         : ";cin>>nim[i];

 cout<<"Nama        : ";gets(nama[i]);

 cout<<"Mata Kuliah : ";gets(mk[i]);

 cout<<"Nilai UTS   : ";cin>>uts[i];

 cout<<"Nilai UAS   : ";cin>>uas[i];

 cout<<"absen(%)    : ";cin>>a[i];

 cout<<"tugas       : ";cin>>t[i];

 ipk[i] = ((0.1* a[i]) + (0.2 * t[i]) + (0,.35 * uts[i] ) + (0.35 * uas[i] ));

 clrscr(); }

 for( i=1;i<=max;i++)

 {cout<<"\nData ke-"<<i<<"";

 cout<<"\nNIM         : "<<nim[i];

 cout<<"\nNama        : "<<(nama[i]);

 cout<<"\nMata Kuliah : "<<(mk[i]);

 cout<<"\nNilai UTS   : ";

 konversi(uts[i]);

 cout<<"\nNilai UAS   : ";

 konversi(uas[i]);}

 cout<<"\nIPK           : ";

 cout<<ipk[i];}

konversi(int x)

{

if(x>=81&&x<=100)

cout<<"A";

 if(x>=76&&x<=80)

 cout<<"A-";

  if(x>=72&&x<=75)

  cout<<"B+";

            if(x>=68&&x<=71)

            cout<<"B";

             if(x>=64&&x<=67)

             cout<<"B-";

              if(x>=60&&x<=63)

              cout<<"C+";

                        if(x>=56&&x<=59)

                        cout<<"C";

                         if(x>=41&&x<=55)

                         cout<<"D";

                          if(x>=0&&x<=40)

                          cout<<"E";}