#include <iomanip.h>
#include <fstream.h>
#define CLS cin.ignore(cin.rdbuf()->in_avail())

int Input(ofstream& ShirtsW, int Quantity[4], float Price[4], int ID[4])
  { int Count;
    for (Count=0; Count<=4; Count++)
      { CLS; cout<<"\nPlease enter Shirt ID: "; cin>>ID[Count];
        CLS; cout<<"\nPlease enter Shirt Price: "; cin>>Price[Count];
        CLS; cout<<"\nPlease enter Shirt Quantity: "; cin>>Quantity[Count];
        ShirtsW<<ID[Count]<<" "<<Price[Count]<<" "<<Quantity[Count]<<endl;
      }
    return 0;
  }    

int Read(ifstream& ShirtsR, int Quantity[4], float Price[4], int ID[4])
  { int Count;
    cout.setf(ios::fixed, ios::floatfield);
    cout.setf(ios::showpoint);
    cout<<setprecision(2);
    cout<<"\n"<<setw(7)<<"ID"<<"\tPrices\tQuantity";
    cout<<"\n"<<setw(7)<<"--"<<"\t------\t--------";
    for (Count=0; Count<=4; Count++)
      { ShirtsR>>ID[Count]>>Price[Count]>>Quantity[Count];
        cout<<"\n"<<setw(7)<<ID[Count]<<"\t"<<setw(6)<<Price[Count]<<"\t"<<setw(8)<<Quantity[Count];        
      }
    return 0;
  }    
   
int Calc(int Quantity[4], float Price[4], int ID[4])
  { int Count;
    cout.setf(ios::fixed, ios::floatfield);
    cout.setf(ios::showpoint);
    cout<<setprecision(2);
    cout<<"\n"<<setw(7)<<"ID"<<"\tPrices\tQuantity\tTotal Sale Amount";
    cout<<"\n"<<setw(7)<<"--"<<"\t------\t--------\t-----------------";
    for (Count=0; Count<=4; Count++)
      { float TotalAmount=Quantity[Count]*Price[Count];
        cout<<"\n"<<setw(7)<<ID[Count]<<"\t"<<setw(6)<<Price[Count]<<"\t"<<setw(8)<<Quantity[Count]<<"\t"<<setw(17)<<TotalAmount; 
      }
    return 0;
  }

int Total(int Quantity[4], float Price[4], int ID[4])
  { int TotalQuantity=0;
    float TotalSales=0;
    int Count;      
    for (Count=0; Count<=4; Count++)
      { TotalQuantity=TotalQuantity+Quantity[Count];
        TotalSales=TotalSales+Price[Count]*Quantity[Count];  
      }
    cout<<"\nTotal Quantity of all shirts sold = "<<TotalQuantity;
    cout<<"\nTotal Sales of all shirts sold = $"<<TotalSales;
    return 0;
  } 

int IDCheck(int ID[4])
  { int TestID;
    cout<<"\nPlease enter ID of shirt desired: "; cin>>TestID;
    if (TestID==ID[0]&&TestID==ID[1]&&TestID==ID[2]&&TestID==ID[3]&&TestID==ID[4]) cout<<"\nShirt ID exists in array.";
    else cout<<"\nShirt ID does not exist in array.";
    return 0;
  }  
    
int Highest(float Price[4]) 
  { int Count;
    float HighestPrice=0;
    for (Count=0; Count<=4; Count++)
      { if (Price[Count]>=HighestPrice) HighestPrice=Price[Count];
      }
    cout<<"\nHighest Priced Shirt = $"<<HighestPrice;  
    return 0;
  }  

int Lowest(float Price[4])
  { int Count;
    float LowestPrice=Price[0];
    for (Count=0; Count<=4; Count++)
      { if (Price[Count]<=LowestPrice) LowestPrice=Price[Count];
      }
    cout<<"\nLowest Priced Shirt = $"<<LowestPrice;       
    return 0;
  }   
     
int main()
  { int Quantity[4];
    float Price[4];
    int ID[4];
    ofstream ShirtsW("Shirts.dat");
    Input(ShirtsW, Quantity, Price, ID);
    ShirtsW.close();
    ifstream ShirtsR("Shirts.dat");
    Read(ShirtsR, Quantity, Price, ID);
    ShirtsR.close();
    Calc(Quantity, Price, ID);
    Total(Quantity, Price, ID);
    IDCheck(ID);
    Highest(Price);
    Lowest(Price);
    cin>>ID[4];
    return 0;
  }