//
// Filename:      pgm4_2a.cpp
//
// Description:   Passing Arrays #1
//
// ENSC 104:      Digital Computer Programming
//
// Instructor:    Dr. Walsh
//
// Section:       2
//
// Date Created:  03/28/98
// Last Modified: 03/28/98
//
// Name:          N/A
//

#include <iostream.h>
#include <stdlib.h>
#include <time.h>

const int NUM_ELEMENTS = 10;

//
// The following are prototypes for functions that accept an
// array as an argument.
//
void generateCharArray( char [], int );
void generateIntArray( int [], int );
void generateDoubleArray( double [], int );

main()
	{
	char   c_array[NUM_ELEMENTS];
	int    i_array[NUM_ELEMENTS];
	double d_array[NUM_ELEMENTS];

	srand( time( NULL ) );

	generateCharArray( c_array, NUM_ELEMENTS );

	generateIntArray( i_array, NUM_ELEMENTS );

	generateDoubleArray( d_array, NUM_ELEMENTS );

	return 0;
	}

void generateCharArray( char c_a[], int n )
	{
	//
	// The following block of code randomly generates lower case
	// lettes of the alphabet. Note from page 889 in your text, the
	// ASCII table, the ASCII codes for the characters are 97 to 122.
	// The following code randonly generates an integer between 97
	// and 122 and type casts it to a char.
	//
	cout << "\n\n***** Randomly Generating Characters *****\n\n";
	for( int i=0; i<n; i++)
		{
		c_a[i] = (char) ( 97 + rand()%26 );
		}

	for( i=0; i<n; i++)
		{
		cout << "\tc_array[" << i << "] = " << c_a[i] << endl;
		}
	}

void generateIntArray( int i_a[], int n )
	{
	int int_min;
	int int_max;
	int int_range;

	//
	// The following code randomly generates a bunch of integers.
	//
	cout << "\n\n***** Randomly Generating Integers *****\n\n";
	cout << "\tEnter the minimum integer value: ";
	cin >> int_min;

	cout << "\tEnter the maximum integer value: ";
	cin >> int_max;
	cout << endl;

	int_range = int_max - int_min;

	for( int i=0; i<n; i++)
		{
		i_a[i] = int_min + rand()%(int_range+1);
		}

	for( i=0; i<n; i++)
		{
		cout << "\ti_array[" << i << "] = " << i_a[i] << endl;
		}
	}

void generateDoubleArray( double d_a[], int n )
	{
	double d_min;
	double d_max;
	double d_range;
	int int_min;
	int int_max;
	int int_range;

	//
	// The following code randomly generates a bunch of doubles.
	//
	cout << "\n\n***** Randomly Generating Doubles *****\n\n";
	cout << "\tEnter the minimum double value: ";
	cin >> d_min;

	cout << "\tEnter the maximum double value: ";
	cin >> d_max;
	cout << endl;

	d_range = d_max - d_min;

	int_min = d_min * 1000;
	int_max = d_max * 1000;
	int_range = int_max - int_min;

	for( int i=0; i<n; i++)
		{
		int temp = int_min + rand()%(int_range+1);
		d_a[i] = temp/1000.0;
		}

	for( i=0; i<n; i++)
		{
		cout << "\td_array[" << i << "] = " << d_a[i] << endl;
		}
	}