Wind Simulation Project Please a little help !

hi guys,

I'm trying to finish my wind smulation project but I'm having problems.

What I'm doing is creating a for loop to display from

0 seconds to 3600 seconds or 1 hour of wind simulation

My first Column displays the Time, and the second column displays the wind result which is a calculation from three inputs.

cin >> Avg_Wind;
cin >> High_Gust;
cin >> Low_Gust;

Upper_Limit = Avg_Windi + High_Gust;
Lower_Limit = Low_Gust;

Avg_Wind = rand_float (Upper_Limit, Lower_Limit);


What I need to do is make some kind of calculation that would increased by 10 the Avg_Wind for a period of 300 seconds.

I created a function on the botton but for some reason it doesn't increased by 10 for a period of 300 seconds and but adds 10 to the wind result for the whole hour :(
Please give me a hand if you have more questions let me know and I will try to explain better .

Thanks Here's what I have so far :confused:

Code:

---

#include <iostream>
#include <fstream>
#include <iomanip>
#include <string>

using namespace std;

void Wind_Speed();
void Wind_Storm();
void Microbursts();
void View_Wind();

double rand_float(double a, double b);
string Make_Stars (int result);
double Small_Storm ( double Wind_Storm );
double Microburst ( double result );



double High_Gust;
double Low_Gust;
double Upper_Limit, Lower_Limit;
double Avg_Wind;

int main()
{
       
  char selection;
 
        do
  {
       
    system("cls");

        cout << "  Wind speed simulation by Dilmer Valecillos CS1600-001 " << endl;
          cout << "  -----------------------------------------------------\n\n"
            << "  Menu\n"
        << "  ----\n\n"
                << "1. Create wind speed simulation \n"
        << "2. Create wind speed with storms \n"
        << "3. Create wind speed with Microbursts \n"
        << "4. View wind simulation \n"
        << "5. Quit\n\n"
        << "  Selection: ";

          //Get menu selection
          selection = cin.get();

          //Process selection
          switch( selection)
          {
            case '\n':                      break;
          case '1': Wind_Speed();  break;
      case '2': Wind_Storm();  break;         
          case '3': Microbursts(); break;
      case '4': View_Wind();  break;
      case '5':                              break;
      default: cout << '\a';
          }

  }while( selection != '5' );

        return 0;
}//end main()

//Function definitions
void Wind_Speed()
{
          system("cls");

          int i = 0;
          int Max_Seconds = 3600;
       
          ofstream wind;
          wind.open("wind.dat");
     
          cout << " |---- dilmer valecillos [cs1600-001] ----|" << endl;
          cout << "\n\n  Enter the average of wind speed (mhp) : " ;
          cin  >> Avg_Wind;
          cout << "\n  Enter high gusts range (mhp) : " ;
          cin  >> High_Gust;
          cout << "\n  Enter low gusts range (mhp) : " ;
          cin  >> Low_Gust;

          Upper_Limit = Avg_Wind + High_Gust;
          Lower_Limit = Avg_Wind + Low_Gust;       

          wind.setf(ios::fixed | ios::showpoint); // set formats in the file
      wind.precision(2);
          cout.setf(ios::fixed | ios::showpoint); // set formats to display on the screen
          cout.precision(2);
         
          for (i = 0; i <= Max_Seconds; i++) // seconds from 0 to max_seconds which is 3600 seconds or an hour
          {
               
                  Avg_Wind = rand_float (Upper_Limit, Lower_Limit);
       
                if ( ( i % 10 ) == 0 )
                {

                wind << setw(4) << i << "  " << Avg_Wind << endl; // Write all the data to a file called wind.dat
                cout << setw(4) << i << "  " << Avg_Wind << " " << Make_Stars ( (int) Avg_Wind) << endl;// outputs the histogram and info to the screen

                }
       
          }
                       
          wind.close();
      system("pause");
}

void Wind_Storm()//Option 2
{
 system("cls");

          int i = 0;
          int Max_Seconds = 3600;
          //int Storm_In;
          int Storm_Time = 300;
     

          ofstream wind;
          wind.open("wind.dat");
     
          cout << " |---- dilmer valecillos [cs1600-001] ----|" << endl;
          cout << "\n\n  Enter the average of wind speed (mhp) : " ;
          cin  >> Avg_Wind;
          cout << "\n  Enter high gusts range (mhp) : " ;
          cin  >> High_Gust;
          cout << "\n  Enter low gusts range (mhp) : " ;
          cin  >> Low_Gust;
          //cout << "\n  Enter storm probability (%) : ";
          //cin  >> Storm_In;


          Upper_Limit = Avg_Wind + High_Gust;
          Lower_Limit = Low_Gust;       

          wind.setf(ios::fixed | ios::showpoint); // set formats in the file
      wind.precision(2);
          cout.setf(ios::fixed | ios::showpoint); // set formats to display on the screen
          cout.precision(2);
         
          for (i = 0; i <= Max_Seconds; i++) // seconds from 0 to max_seconds which is 3600 seconds or an hour
          {

                Avg_Wind = rand_float (Upper_Limit, Lower_Limit);

                if ( ( i % 10 ) == 0 )
                {

                wind << setw(4) << i << "  " << Avg_Wind << endl; // Write all the data to a file called wind.dat
                cout << setw(4) << i << "  " << Small_Storm(Avg_Wind) << " " << Make_Stars ( (int) Avg_Wind) << endl;// outputs the histogram and info to the screen
       
                }
       
          }
               
          wind.close();
      system("pause");
}

void Microbursts()//Option 3
{
system("cls");

          int i = 0;
          int Max_Seconds = 3600;
         
         
     

          ofstream wind;
          wind.open("wind.dat");
     
          cout << " |---- dilmer valecillos [cs1600-001] ----|" << endl;
          cout << "\n\n  Enter the average of wind speed (mhp) : " ;
          cin  >> Avg_Wind;
          cout << "\n  Enter high gusts range (mhp) : " ;
          cin  >> High_Gust;
          cout << "\n  Enter low gusts range (mhp) : " ;
          cin  >> Low_Gust;

          Upper_Limit = Avg_Wind + High_Gust;
          Lower_Limit = Avg_Wind + Low_Gust;       

          wind.setf(ios::fixed | ios::showpoint); // set formats in the file
      wind.precision(2);
          cout.setf(ios::fixed | ios::showpoint); // set formats to display on the screen
          cout.precision(2);
         
          for (i = 0; i <= Max_Seconds; i++) // seconds from 0 to max_seconds which is 3600 seconds or an hour
          {

                if ( ( i % 10 ) == 0 )
                {

                wind << setw(4) << i << "  " << Avg_Wind << endl; // Write all the data to a file called wind.dat
                cout << setw(4) << i << "  " << Microburst(Avg_Wind) << " " << Make_Stars ( (int) Avg_Wind) << endl;// outputs the histogram and info to the screen
       
                }
       
          }
               
          wind.close();
      system("pause");
}

void View_Wind()
{
    system("cls");
 
        int seconds; // since the first column is a whole number i declate it as a int
        double Wind_Speed; // the wind result in the second column has decimals so it must be a double number

        ifstream read_file; //to read info from a file

        read_file.open("wind.dat"); // to open the file for reading

        read_file  >>  seconds >> Wind_Speed; // read first and second column in this case seconds and wind speed

        while (! read_file.eof()) // read the data until the end of the file
       
        {

        read_file  >>  seconds >> Wind_Speed; // read the first column and the second colum of the file
        cout << setw(4) << seconds << "  " << Wind_Speed <<  endl; // show the info on the screen with a width of 4               
       
        }
       
        read_file.close(); // close the file
    system("pause");
}

double rand_float (double a, double b)

{
        return ((double) rand() / RAND_MAX ) * (b - a) + a;
}

string Make_Stars (int result) // Histogram Function

{
        int i;
        string Stars;

        for ( i = 1; i <= Avg_Wind; i++)
        {
                Stars += "*";
        }

        return Stars;
}

double Small_Storm ( double Storm ) //Returns a value and Adds 10 mph to the Average for five minutes of Storm
{
        int Storm_Time = 300;
 
    for ( int x = 0; x < Storm_Time; x++)
        {
                       
        return Avg_Wind = rand_float (Upper_Limit + 10, Lower_Limit + 10);
                       
        }

}

double Microburst ( double result )

{

        int Time = 60;
       
        for ( int x = 0; x < Time; x++)
        {
       
        return Avg_Wind = rand_float (Upper_Limit + 25, Lower_Limit + 25);

        }
}

---

> cout << setw(4) << i << " " << Small_Storm(Avg_Wind) <<

if(i<300)cout<<set(4)<<i<<" "<<small_Storm(avg_wind).

Code:

---

double Small_Storm ( double Storm ) //Returns a value and Adds 10 mph to the Average for five minutes of Storm
{
        int Storm_Time = 300;
 
    for ( int x = 0; x < Storm_Time; x++)
        {
                       
        return Avg_Wind = rand_float (Upper_Limit + 10, Lower_Limit + 10);
                       
        }

}

---

the loop is not required.

and u r not passing the value of upper_limit or lower_limit