Contoh Program C++ Menghitung IPK Mahasiswa

#include <iostream>
#include <conio.h>
using namespace std;

int HitungIPK (char x, int y);

int main()
{
       cout<<"\t\tMENGHITUNG INDEX PRESTASI (IP)"<<endl;
       cout<<"\t........... Develop by www.idnpedia.com ..........."<<endl;
       cout<<"\t.................NIM 20.02.0611................"<<endl <<endl;
       int nilai;
       string hasil;
       int jumlahMK, jumlahMhs, jumlahsks, a,b,c;

       float ip_plus,ipp, ippp;
       char hitunglagi, kls;
       jumlahsks=0;
       ippp=0;

       struct mahasiswa
       {
              char nama[25];
              int nim;
              float ipk;
       };

       struct matakuliah
       {
              int kodeMK;
              char namaMK[25];
              char nilai;
              int sks;
       };

       mahasiswa mhs;
       matakuliah makul;


       do {
              cout<<"======================================================"<<endl<<endl;
              cout<<"\tMasukkan Nama Anda\t= ";
              cin>>mhs.nama;
              cout<<"\tMasukkan NIM Anda\t: ";
              cin>>mhs.nim;

              cout<<" \tJumlah Matakuliah\t: ";
              cin>>jumlahMK;
              cout<<endl;
              cout<<"======================================================"<<endl<<endl;

             cout << "Inputkan Data" << endl;

              for(b=0; b<jumlahMK; b++)
              {
                     cout<<b+1;
                     cout<<"    Nama Matkul \t: ";
                     cin>>makul.namaMK;
                     cout<<"    Bobot SKS\t: ";
                     cin>>makul.sks;

                     cout<<"    Nilai Akhir : ";
                     cin>>nilai;

                     if(nilai >= 90 && nilai <= 100){
            hasil = "A";
        }
        else if(nilai >= 82 && nilai <= 89) {
            hasil = "A-";
        }
        else if(nilai >= 62 && nilai <= 81) {
            hasil = "B";
        }
        else if(nilai >= 42 && nilai <= 61) {
            hasil = "C";
        }
        else if(nilai >= 22 && nilai <= 41) {
            hasil = "D";
        }
        else if(nilai >= 0 && nilai <= 21) {
            hasil = "E";
        }
        cout<< "    Nilai Huruf: "<<hasil<<endl;

                     cout<<"    Ketik Ulang (A,B,C,D,E) : ";
                     cin>>makul.nilai;

                     cout<<"=================================================== \n";

                     cout<<endl;

                     jumlahsks=jumlahsks+makul.sks;
                     ipp= HitungIPK(makul.nilai, makul.sks);
                     ippp+=ipp;

              }
              mhs.ipk = ippp/jumlahsks;
              cout<<"=================================================== \n";
              cout<<"Total SKS Diambil Anda \t\t : "<<jumlahsks<<endl;
              cout<<"IP Anda \t\t\t:"<<mhs.ipk<<endl<<endl;
              cout<<"=================================================== \n";


              cout<<"Mau hitung lagi kak? (y /n) = ";
              cin>>hitunglagi;

       }while(hitunglagi=='y' || hitunglagi=='Y');


       system("pause");
       return 0;
}

       int HitungIPK (char x, int y)
{
       int ip;
       switch(x)
       {
       case 'A':
              ip=4*y;
              break;
       case 'B':
                     ip=3*y;
                     break;
       case 'C':
                     ip=2*y;
                     break;
       case 'D':
                     ip=1*y;
                     break;
       case 'E':
                     ip=0*y;
                     break;
       default:
              ip=0;
              break;
       }
       return ip;
}