C++ Project, need all the help i can get!

Code:
    #include <iostream>

#include <iomanip>

#include <cmath>

#include <string>

#include <fstream> //required for file streaming

#include <cctype> 

#include <ctime>



using namespace std;



/************************************

Function Name: Rand_Float

This function generates a random value

between a and b.

Passed: a = min value

        b = max value

Returned: random double value

************************************/

double Rand_Float(double a, double b)

{

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

}



/*************************************

Function Name: Distance

This function calculates the distance from 

the light to the floor

Passed: measurement_1 = base

        measurement_2 = height

Returned: distance

**************************************/

double Distance(double measurement_1, double measurement_2)

{

    double distance;

    distance = sqrt(measurement_1*measurement_1+measurement_2*measurement_2);

    return distance;

}



double Intensity(int power, double Distance)

{

    double intensity;

    intensity = power/(Distance*Distance);

    return intensity;

}



int main()

{

    //Declare objects

    srand(time(0));

    char option;

    int num_floodlights;

    char given_random;

    double measurement_1, measurement_2, measurement_3, measurement_4;

    double distance;

    double intensity;

    int power;

    int height;

    int loop(0);



    const double a(70.5);

    const double b(1);

    const int NROWS(94);

    const int NCOLS(50);

    double court[NROWS][NCOLS];

    int i, j;



//Read in values

    lights >> option >> num_floodlights >> given_random >> measurement_1 >> measurement_2 >> measurement_3 >> measurement_4 >> power >> height;



    //While loop that will run through the first two options of light placement

    while(option != 'C')

    {



        for (i=0;i<NROWS;i++)

        {

            for (j=0;j<NCOLS;j++)

            {

                //Call the functions

                distance = Distance(measurement_1, measurement_2);

                intensity = Intensity(power, distance);

                court[i][j]=intensity;

                cout << setprecision(2) << "\t" << court[i][j];



            }



    }

    //Read in next option

    lights >> option >> num_floodlights >> given_random >> measurement_1 >> measurement_2 >> measurement_3 >> measurement_4 >> power >> height;

    }

    system("pause");

        return 0;

}