Menentukan Grade Berdasarkan Nilai yang diinput

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

void display_data( string, string, float, string);
float nilai_akhir(float , float, float);
float average( float , int );
float maximum( float );
float minimum( float );
string grade( float );
void atas();
void endinput();
void hslkpl();
void kaki();

class hasil                                                        
{
public:
//Display data      
void display_data( string nim1, string nama1, float nilai1, string grading1)
{
     cout<<" "<<nim1<<" \t "<<nama1<<" \t\t "<<nilai1<<" \t\t "<<grading1;
     cout<<endl;             
}
//Laporan akhir
void display_akhir( float total2, float rata, int jumlah, float max1, float min1  )
{
     cout<<endl;
     cout<<"Total Student\t\t: "<<jumlah<<endl;
     cout<<"Total All Value\t\t: "<<total2<<endl;
     cout<<"All Average Value\t: "<<rata<<endl;
     cout<<"Maximum Value\t\t: "<<max1<<endl;
     cout<<"Minimum Value\t\t: "<<min1<<endl;
}    
};


class laporan
{
public:

laporan( string );
void setnama( string );
string getnama();
void setmatkul( string );
string getmatkul();
void setlecture( string );
string getlecture();
void setsmester( int );
int getsmester();
void msgg();
void msggtable();
string msggmatkul();
string msgglecture();
int msggsmester();
void input_data();

private:
string matkul;
string lecture;
string namaset;
int smester;      
};

laporan::laporan( string name )
{
     setmatkul( name );
     setlecture( name );
     setnama( name );
}
//proses set modul
void laporan::setmatkul( string name )
{
     matkul = name;  
}
void laporan::setlecture( string name )
{
     lecture = name;
}
void laporan::setnama( string name )
{
     namaset = name;
}
void laporan::setsmester( int angka )
{
     smester = angka;
}
//*************************** GET MODUL **************************************//
string laporan::getmatkul()
{
       cout<<"Class        : "<<matkul;
       getline( cin, matkul );
       return matkul;
}
string laporan::getlecture()
{
       cout<<"Lecture Name : "<<lecture;
       getline( cin, lecture );
       return lecture;
}
string laporan::getnama()
{
       cout << "Student Name : "<<namaset;
       getline( cin, namaset );
       return namaset;
}
int laporan::getsmester()
{
       cout<<"Semester     : ";
       cin>>smester;
       return smester;
}
void laporan::msgg()
{
     getmatkul();
     getlecture();
     getsmester();
     cout<<endl;  
}


string laporan::msggmatkul()
{
       cout<<"Class\t\t: "<<matkul;
       return matkul; 
}
string laporan::msgglecture()
{
       cout<<"Lecture Name\t: "<<lecture;
       return lecture;
}
int laporan::msggsmester()
{
    cout<<"Semester\t: "<<smester;
    return smester;
}

void laporan::msggtable()
{
     msggmatkul();
     cout<<endl;
     msgglecture();
     cout<<endl;
     msggsmester();
     cout<<endl;
}
 

void laporan::input_data()
{
     string nama[60];
     string nim[60];
     string grade1[60];
     string batas;
     float uts[60],uas[60],tugas[60];
     float nilai_akhir1[60];
     float total;
     float average1;
     float max;
     float min;
     float asa;
    
     int i=1;
     int count=0;
     hasil yudi;//memanggil class dengan membuat variabel baru yudi

     do
     {
         cout << "Student Data ["<<i<<"] : \n"<<endl;
        
         cout << "ID"<<setw(13)<<": ";
         cin  >> nim[i];
        
         if ( nim[i] != "xxx" )
         {
            cout << "Student Name"<<setw(2)<<" : ";
            cin  >> nama[i];
            cout << "Mid Ex."<<setw(8)<<" : ";
            cin  >> uts[i];
            if ( uts[i] > 100 || uts[i] < 0 )
            {
               do
               {
                 cout << "Mid Ex."<<setw(14)<<" : ";
                 cin  >> uts[i];
                 asa = uts[i];
               }
               while( asa > 100 || asa < 0 ); 
            }
            cout << "End Ex."<<setw(8)<<" : ";
            cin  >> uas[i];
            if ( uas[i] > 100 || uas[i] < 0 )
            {
               do
               {
                 cout << "End Ex."<<setw(14)<<" : ";
                 cin  >> uas[i];
                 asa = uas[i];
               }
               while( asa > 100 || asa < 0 );
            }
            cout << "Lesson"<<setw(9)<<" : ";
            cin  >> tugas[i];
            if ( tugas[i] > 100 || tugas[i] < 0 )
            {
               do
               {
                 cout << "Lesson"<<setw(12)<<" : ";
                 cin  >> tugas[i];
                 asa = tugas[i];
               }
               while( asa > 100 || asa < 0 );
            }
           
            i++;
            count++;
            cout<<endl;
          }
     batas = nim[i];
     }
     while( batas != "xxx" );
    
     endinput();
     msggtable();
     hslkpl();

     if ( nim[1] != "xxx" )
     {
        for (i=1; i <= count; i++)
        {   
             nilai_akhir1[i] = nilai_akhir(uts[i], uas[i], tugas[i]) ;
             grade1[i] = grade(nilai_akhir1[i]);
             max = maximum( nilai_akhir1[i] );
             min = minimum( nilai_akhir1[i] );
             total += nilai_akhir1[i];           
             yudi.display_data(nim[i], nama[i], nilai_akhir1[i], grade1[i]);//MEMANGGIL FUNGSI DISPLAY_DATA
             cout<<endl;
             average1 = average( total, count );
        }
     }
     if ( nim[1] == "xxx" )
     {
          average1 = 0;
          total = 0;
          count = 0;
          cout<<endl;
     }
     kaki();
     yudi.display_akhir( total, average1, count, max, min );
}

//cari max
float temp = 0;
float maximum( float nilai )
{
     float maximum;
     if( nilai > temp )
     {
         temp = nilai;
         maximum = nilai;
         return (maximum);
     }
     else
     maximum = temp;
     return (maximum);
}
//cari min
float temp1 = 100;
float minimum( float nilai )
{
      float minimum;
      if( nilai <= temp1 )
      {
          temp1 = nilai;
          minimum = nilai;
          return (minimum);
      }
      else
      minimum = temp1;
      return (minimum);
}    

float nilai_akhir(float uts1,float uas1,float tugas1 )
{
      float nilai_akhir;
      nilai_akhir = (uts1*0.2) + (uas1*0.3) + (tugas1*0.5);
      return(nilai_akhir);
}
float average( float total1, int jumlah )
{
      float rata_rata;
      rata_rata = total1 / (jumlah);
      return( rata_rata );     
}
///grading di mulai :D
string grade( float nilai_a )
{
      string grade;
      if ( nilai_a <= 100 && nilai_a >= 80 )
      {
           grade = "A";
           return(grade);
      }
      else if( nilai_a < 80 && nilai_a >= 70 )
      {
           grade = "B";
           return(grade);
      }
      else if( nilai_a < 70 && nilai_a >= 60 )
      {
           grade = "C";
           return(grade);
      }
      else if( nilai_a < 60 && nilai_a >= 50 )
      {
           grade = "D";
           return(grade);
      }
      else if( nilai_a < 50 )
      {
           grade = "E";
           return(grade);
      }
}


void atas()
{
     cout<<"A Program By W.E.S"<<endl<<endl;
     cout<<"=================================================================="<<endl;
     cout<<"                         STUDENT DATA                          "<<endl;
     cout<<"=================================================================="<<endl;
}

void endinput()
{
     cout<<"\n\n";
     cout<<"=================================================================="<<endl;
     cout<<"\n";
     cout<<"                          STUDENT DATA REPORT                       "<<endl;
     cout<<"\n";
}

void hslkpl()
{
    
     cout<<"------------------------------------------------------------------"<<endl;
     cout<<" ID \t\t| Student Name | Result Value   |\t GRADE \t  |"<<endl;
     cout<<"------------------------------------------------------------------"<<endl;
     cout<<"\n";
}

void kaki()
{
     cout<<"------------------------------------------------------------------"<<endl;
}
//============================================================================//
int main()//MAIN LINE
{
    atas();
    cout<<endl;
    laporan mylaporan("");
    mylaporan.msgg();
    mylaporan.input_data();
    cout<<"\n\n------------------------------------------------------------------"<<endl;
    cout<<"\t\tThanks for use our Program";
    cout<<"\n------------------------------------------------------------------"<<endl;
    getch();
}

Written by: Wahyudi Nugroho

WN UPDATE, Updated at: 01:19

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