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//This program is used to test the options used in Assignment 4 before inputting them in
#include <iostream>
#include <fstream>
#include <iomanip>
#include <cstdlib>
#include <ctime>
#include <bits/stdc++.h>
using namespace std;
void enterValues(int[], int);
void displayNumbers(int[], int);
void readNumbers(/*inout*/ifstream &, /*out*/int [], /*in*/int);
void initNumbers(/*out*/ int [], /*in*/int);
void findMedian(int [],const int);
void selectionSort(int [], int);
void swap(double&, double&);
int main()
{
const int ARRAY_SIZE = 10;
int integers[ARRAY_SIZE], tracker, choice, median;
do
{
cout<<fixed<<showpoint<<setprecision(2); //manipulators set for output format
// File stream object
ifstream inFile;
cout << "---------------------------------------------------------------------" << endl;
cout << "1-D ARRAY PROCESSING MENU OPTIONS - ARRAY BASED LIST WITH 10 ELEMENTS" << endl;
cout << "---------------------------------------------------------------------" << endl;
cout << "1. New data set: Keyboard input(10 numbers from user)" << endl;
cout << "2. New data set: File data read(10 numbers from the file, numbers.txt.)" << endl;
cout << "3. Data set: Display current data set." << endl;
cout << "4. Data set: Display median." << endl;
cout << "5. Data set: Display mode." << endl;
cout << "6. Data set: Check array elements - sorted or unsorted." << endl;
cout << "7. Data set: Ascending sort - Selection Sort." << endl;
cout << "8. New data set: Random numbers(10 numbers in range of values 1 - 200)." << endl;
cout << "9. Data set: Binary Search for data item - found, not found and position" << endl;
cout << "10.Exit program" << endl;
cout << endl;
cout << "Enter your choice: ";
cin >> choice;
switch(choice)
{
case 1: enterValues(integers, tracker);
cout << endl;
displayNumbers(integers, tracker);
break;
case 2: readNumbers(inFile, integers, tracker);
cout << endl;
displayNumbers(integers, tracker);
break;
case 3:
break;
case 4: selectionSort(integers, ARRAY_SIZE);
findMedian(integers, ARRAY_SIZE);
break;
case 5:
break;
case 6:
break;
case 7:
break;
case 8:
break;
case 9:
break;
case 10:cout<<endl;
cout<<"Array processing test now concluded. Exiting program ....."<<endl;
break;
default: cout<<"INVALID CHOICE ...please retype"<<endl;
break;
}
}while(choice != 10);
return 0;
}
void enterValues(int integers[], int numCount)
{
const int amount = 10;
cout << "Please enter ten values!" << endl;
cout << endl;
for(int numCount = 0; numCount < amount; numCount++)
{
cout << "Value #" << (numCount + 1) << ": ";
cin >> integers[numCount];
}
}
void displayNumbers(int integers[], int numCount)
{
const int amount = 10;
cout << " *** Current elements in the array based list *** \n";
cout << "-------------------------------------------------------\n";
for (numCount = 0; numCount < amount; numCount++)
{
cout<<"Element#"<< (numCount + 1) <<":";
if(numCount==amount-1)
cout<<setw (4) <<integers[numCount]<<endl;
else
cout<<setw (5) <<integers[numCount]<<endl;
}
}
void readNumbers(/*inout*/ifstream &inFile, /*out*/int integers[], /*in*/int numCount)
{
string fileName;
const int amount = 10;
cout<<"Please enter filename: ";
cin>>fileName;
inFile.open(fileName.c_str() );// Open the file
//File not found validation routine
while (!inFile) {
cin.clear();
cin.ignore(200, '\n');
cout << "Error opening the file.\n";
cout<<"Please enter filename: ";
cin>>fileName;
inFile.open(fileName.c_str()); // Open the file.
}
for (numCount = 0; numCount < amount; numCount++)
inFile >> integers[numCount]; //file data read...note no validation for correct data items
cout<<"File has successfully opened and "<< numCount <<" values have been read and stored."<<endl;
inFile.close();
inFile.clear();
}
void initNumbers(/*out*/ int integers[], /*in*/int numCount)
{
const int amount = 10;
for(numCount = 0; numCount < amount ; numCount++)
{
integers[numCount] = 0;
}
}
void findMedian(int array[], const int size)
{
double median;
if (size % 2 == 0)
{
median = (array[size/2] + array[size/2-1])/2.0;
}
else
median = array[size/2];
cout << median << endl;
}
void selectionSort(int array[], int size)
{
int minIndex, minValue;
for(int start = 0; start < (size -1); start++)
{
minIndex = start;
minValue = array[start];
for(int index = start + 1; index < size; index++)
{
if(array[index] < minValue)
{
minValue = array[index];
minIndex = index;
}
}
swap(array[minIndex], array[start]);
}
}
void swap(double &a, double &b)
{
double temp = a;
a = b;
b = temp;
}
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