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Weather Temperature Recording Project

Posted By: Easy Tutor     Category: C++ Programming     Views: 28676

Weather Temperature Recording Project

Code for Weather Temperature Recording Project in C++ Programming

#include <iostream.h>
#include <fstream.h>
#include <iomanip.h>
#include <math.h>
#include <conio.h>
#include <string.h>


fstream file;
char year[5]="";

//Non-Member function to find month, to avoid user data-entrychar *returnMonth(int m){
    switch(m){
        case 1 : return("January");
        case 2 : return("February");
        case 3 : return("March");
        case 4 : return("April");
        case 5 : return("May");
        case 6 : return("June");
        case 7 : return("July");
        case 8 : return("August");
        case 9 : return("September");
        case 10 : return("October");
        case 11 : return("November");
        case 12 : return("December");
    }
    return("Invalid");
}

//Non-Member functions, checks for whether file is loaded or not//it returns 1 if not loaded and 0 otherwise.int checkFile(){
    if(file==NULL){
       cout<<"\nThere is No Data to Display\n";
       getch();
       return(1);
    }
    return(0);
}

class weather
{
     public:
     double avgtemp[12];
     char month[12][20];
     weather();
     void getdata(int m){ //simple getdata...
     strcpy(month[m],returnMonth(m)); //avoiding user to input
     cout<<"\nEnter temperature for "<<month[m]<<" : ?\b";
     cin>>avgtemp[m];
     }
     void displaydata(int m){ //simple displaydata
     cout<<setw(20)<<setprecision(2)<<setiosflags(ios::left)
         <<setiosflags(ios::showpoint)
         <<month[m]<<setw(10)<<setiosflags(ios::right)<<avgtemp[m];
     }
     void displaytemp(int i){ //Display only Temperature data
      cout<<setw(10)<<setprecision(2)<<setiosflags(ios::right)
          <<setiosflags(ios::showpoint)<<avgtemp[i];
     }
     double returntemp(int i){
      return(avgtemp[i]);
     }
     void loadfile();
     void displaytempscale(); //for displaying temperature scalevoid updatedata(int m,double t)
     {
    strcpy(month[m],returnMonth(m));
    avgtemp[m]=t;
     }
     int validate(double t){ //Validate entered temperature (change to suit ur requirement).if(t>55 || t < (-20))
       return(1); //states that invalid entryelsereturn(0); //valid entry
     }
};

weather :: weather(){  //Constructor to intialize objectfor(int i=0;i<12;i++)
    {
        avgtemp[i]=0;
        month[i][0]=NULL;
    }
}

void weather :: loadfile(){  //for Selecting Year or creation of new year file.
    clrscr();
    file.close(); //It is required when trying to open different year files,//while there is already loaded any year file.char filename[20]="";
    cout<<"\n*****Select a Year to Work With*****\n\n";
    cout<<"Enter Year (eg: 2001)  : ?\b";
    cin>>year;
    strcat(filename,"c:\\"); //Here i am assuming that path must be c:\
    strcat(filename,"data"); //if u wan't to skip that criteria just remove this lines.
    strcat(filename,year);
    strcat(filename,".dat");
    file.open(filename,ios::ate|ios::nocreate|ios::in|ios::out|ios::binary);
    if(file==NULL){
        char ans;
        cout<<"\nFile Dose Not Exist\n"
            <<"Do you wan't to create it! (y or n) N : ?\b"; //By default No
        ans=getche();
        if(ans=='y'|| ans=='Y'){
           file.open(filename,ios::ate|ios::in|ios::out|ios::binary);
           cout<<"\n\nFile Created Successfully";
        }
        else{
           file;
           cout<<"\n\nFail to load data file";
        }
    }
       else if(file!=NULL){
        cout<<"\nData File is successfully loaded";
       }
       getch();
}

void weather :: displaytempscale(){
    int i,c=0;
    cout<<"\n\n";
    for(i=1;i<=70;i++)
    {
       if(i<=10)
          cout<<"0";
       else if(i<=20)
          cout<<"1";
       else if(i<=30)
          cout<<"2";
       else if(i<=40)
          cout<<"3";
       else if(i<=50)
          cout<<"4";
       else if(i<=60)
          cout<<"5";
       else if(i<=70)
          cout<<"7";
    }
    cout<<"\n";
    for(i=1;i<=7;i++)
    {
      for(c=0;c<10;c++)
        cout<<c;
    }
    cout<<"\n";
}

void intro()
{
    clrscr();
    cout<<"\n\n\n\n\n\n\n\n\t\t\t";
    cout<<"\t\t\tEmail : admin@syntax-example.com\n"
        <<"\t\t\tWebsite : http://www.syntax-example.com";
    cout<<"\n\n\t\t\t";
    cout<<"Thanks for using this software.";
    getch();
}


void main(){
    char choice='1';
    int cnt,i,j,iNum,totstars=0,location,m;
    double decNum,dNum,high=0,low=99999,avg=0,t;
    char c;
    weather obj;
    file.close();
    do{
        clrscr();
        cout<<"\n*****Main Menu*****\n";
        cout<<"1>  Select a year to work with\n"
            <<"2>  Display data as Table\n"
            <<"3>  Display data as horizontal histogram\n"
            <<"4>  Display Yearly Statistics to date\n"
            <<"5>  Record Data\n"
            <<"6>  Change Data\n"
            <<"7>  Save Data\n"
            <<"0>  Exit\n"
            <<"Please enter a number (0...7) => ";
        choice=getche();
        //again for sake of simplicity i have directly return code
        //in case brace rather than going for member-function.
        switch(choice){
            case '0' :  intro();
                    goto out;
            case '1' :  obj.loadfile();
                    break;
            case '2' :  clrscr();
                    cout<<"\n*****Display Data as a Table*****\n\n";
                    if(checkFile()){
                       goto endtable;
                     }
                    cout<<"\nTable of Temperature data for "<<year;
                    cout<<"\n\n";
                    file.seekg(0,ios::end);
                    cnt=file.tellg();
                    cnt=cnt/sizeof(obj); //cnt contains how many records previously recorded
                    file.seekg(0,ios::beg);
                    for(i=1;i<=cnt;i++)
                    {
                       if(i==1)
                        cout<<"\nQuater 1 : ";
                       else if(i==4)
                        cout<<"\nQuater 2 : ";
                       else if(i==7)
                        cout<<"\nQuater 3 : ";
                       else if(i==10)
                        cout<<"\nQuater 4 : ";
                       file.read((char *)&obj, sizeof(obj));
                       if(!file.eof()){
                           obj.displaytemp(i);
                    }
                    file.clear();
                    }
                    getch();
                    endtable:
                    break;
            case '3' :  clrscr();
                    cout<<"\n*****Display Data as a Horizontal Histogram*****\n\n";
                    if(checkFile()){
                       goto endhistogram;
                    }
                    cout<<"Histogram of Temperature data for "<<year;
                    obj.displaytempscale();
                    file.seekg(0,ios::end);
                    cnt=file.tellg();
                    cnt=cnt/sizeof(obj); //cnt contains how many records previously recorded
                    file.seekg(0,ios::beg);
                    for(i=1;i<=cnt;i++)
                    {
                       cout<<"\n"<<setw(15)<<setiosflags(ios::left)<<returnMonth(i);
                       file.read((char *)&obj, sizeof(obj));
                       if(!file.eof()){
                         decNum=obj.returntemp(i);
                         iNum=floor(decNum);
                         dNum=decNum-iNum; //for finding decimal part.
                         totstars=iNum;
                         if(dNum >= 0.5)
                        totstars++;
                         for(j=1;j<=totstars;j++)
                        cout<<"*";
                         cout<<"  "<<totstars;
                    }
                    file.clear();
                    }
                    obj.displaytempscale();
                    getch();
                    endhistogram:
                    break;
            case '4' :  clrscr();
                    cout<<"\n*****Display Yearly Statistics to Date*****\n\n";
                    if(checkFile()){
                       goto endstatus;
                    }
                    cout<<"Temperature Statistics data for "<<year;
                    cnt=file.tellg();
                    cnt=cnt/sizeof(obj); //cnt contains how many records previously recorded
                    file.seekg(0,ios::beg);
                    high=avg=0;
                    low=99999;
                    for(i=1;i<=cnt;i++)
                    {
                       file.read((char *)&obj, sizeof(obj));
                       double tmp=obj.returntemp(i);
                       if(!file.eof()){
                         if(high < tmp)
                        high=tmp;
                         if(low > tmp)
                        low=tmp;
                         avg=avg+tmp;
                    }
                    file.clear();
                    }
                    avg=avg/double(cnt);
                    cout<<"\n\nHighest Monthly Average : "<<high;
                    cout<<"\nLowest Monthly Average : "<<low;
                    cout<<"\nAverage Yearly Temperature : "<<avg;
                    getch();
                    endstatus:
                    break;
            case '5' :      clrscr();
                    cout<<"\n*****Record Data*****\n\n";
                    if(checkFile()){
                        goto endRecord;
                        }
                    else{
                    cnt=file.tellg();
                    cnt=cnt/sizeof(obj); //cnt contains how many records previously recorded
                    if(cnt==12)
                        cout<<"\n\nData-Entry of "<<year<<" is already been done\n";
                    for(i=cnt+1;i<=12;i++)
                    {
                        enteragain:
                        cout<<"\nDo u wan't to enter data for"<<returnMonth(i)<<" (Y or N) Y : ?\b";
                        c=getche();
                        if(c=='n' || c=='N')
                           goto endRecord;
                        obj.getdata(i);
                        if(obj.validate(obj.returntemp(i)))
                        {
                            cout<<"\nInvalid Data Entry\n";
                            goto enteragain;
                        }
                        cin.get(c);
                        file.write((char *) &obj, sizeof(obj));
                    }
                     }
                     getch();
                     endRecord:
                      break;
            case '6' :  clrscr();
                    cout<<"\n*****Change Data*****\n\n";
                    if(checkFile()){
                       goto endchange;
                    }
                    else{
                    cnt=file.tellg();
                    cnt=cnt/sizeof(obj); //cnt contains how many records previously recorded
                    tryagain:
                    cout<<"\nEnter Month (in digit) whose temperature is to be changed : ?\b";
                    cin>>m;
                    if(m <= 0 || m > cnt){
                        cout<<"\n\nInvalid Month\n";
                        getch();
                        goto tryagain;
                    }
                    tempagain:
                    cout<<"\nEnter Temperature : ?\b";
                    cin>>t;
                    if(obj.validate(t))
                     {
                         cout<<"\nInvalid Data Entry\n";
                         goto tempagain;
                     }
                    file.seekg(0,ios::beg);
                    location= (m-1) * sizeof(obj);
                    file.seekp(location);
                    obj.updatedata(m,t);
                     cin.get(c);
                    file.write((char *) &obj, sizeof(obj))<<flush;
                     }
                     endchange:
                     break;
            case '7' : clrscr();
                   cout<<"\n*****Store the Current Data*****\n\n";
                   if(checkFile()){
                    goto endsave;
                    }
                   flush(file);
                   cout<<"\nData in Memory is Saved successfully\n";
                   getch();
                   endsave:
                   break;
            default  : cout<<"\n\nInvalid Input\n";
                   getch();
        }
    }while(choice!='0');
flush(file);
file.close();
clrscr();
out:
}
  
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Easy Tutor author of Weather Temperature Recording Project is from United States. Easy Tutor says

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