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#include<iostream>
#include <iomanip>
#include<string>
#include<cmath>
#include<stdlib.h>
using namespace std;
void displayMenu(void);
void menuChoice(int &choice);
void storeAreas(int areasArray[], int &arraySize);
void readAreas(int &areas);
void readInteger(int &areas);
void clear();
void generateAreas (int areas[], int arraySize);
int displayAreas(int areasArray[], int arraySize);
void getAverage(int arraySize, int areasArray[]);
const int maxSize=7;
int main()
{
//initialise variables
int arraySize=7, mode=0, choice=0;
int areasArray[maxSize]={0};
double area=0, average=0, total=0, min=199.99, max=1999.99;
//Display menu
displayMenu();
//Get users' choice
menuChoice(choice);
while(true)
{
switch (choice)
{
case 1:storeAreas(areasArray, arraySize);break;
case 2:cout<<"3";break;
case 3:displayAreas(areasArray, arraySize);break;
case 4:cout<<"largestAreas(areasArray, arraySize)";break;
case 5:cout<<"5";break;
case 6:cout<<"6";break;
case 7:cout<<"7";break;
case 8: cout<<"You are about to leave this program." <<endl;return 0;
default: cout<<"That is an invalid choice please re-enter menu selection"<<endl;
}
displayMenu();
menuChoice(choice);
}
}//end main
//***************************************************
void displayMenu(void)
{
cout<<"Menu"<<endl;
cout<<"1. Read Areas of 7 countries and store them in an array."<<endl;
cout<<"2. Randomly generate Areas of M countries and store them in an array."<<endl;
cout<<"3. Display areas stored in an array and the average area."<<endl;
cout<<"4. Find and display the array index for largest country based on Area."<<endl;
cout<<"5. Find and display the array index for smallest country based on Area."<<endl;
cout<<"6. Sort and display in ascending order Areas stored in the array."<<endl;
cout<<"7. Search and display Area which is equal to the given area."<<endl;
cout<<"8. Exit from program."<<endl;
cout<<"Please enter a menu choice."<<endl;
}
//*********************************************************
void menuChoice(int &choice)
{
cin>>choice;
while(choice<1 || choice>8)
{
cout<<"Please enter a valid choice (0-8).";
cin>>choice;
}
}
//****************************************************
void storeAreas(int areasArray[], int &arraySize)
{
int area=0;
for(arraySize=0; arraySize<7; arraySize++)
{
cout<<"Please enter area in sqkm (199.99 - 1999.99), 0 to end)=>."<<endl;
readAreas(area);
}
}
//****************************************************************
void readAreas(int &area)
{
double min=199.99, max=1999.99;
readInteger(area);
while (area<min || area>max)
{
cout << "ERROR: The area must be between 199.99 and 1999.99 sqkm." << endl;
readInteger(area);
}
}
//*************************************************************
void readInteger(int &area)
{
cin>>area;
while(cin.fail())
{
cin.clear();
clear();
cout<<"You must enter a number, characters are not allowed."<<endl;
cin>>area;
}
}
//***********************************************************
void clear()
{
char Char=' ';
while (Char !='\n')
{
cin.get(Char);
}
}
//**********************************************************
//This is the function I am having problems with.
//I would like it to display the contents of my array however it returns zero values.
int displayAreas(int areasArray[], int arraySize)
{
cout<<setw(7)<<"Country"<<setw(13)<<"Areas"<<endl;
for (int i= 0; i<7; i++)
cout<<setw(7)<<i+1<<setw(13)<<areasArray[i]<<endl;
getAverage(arraySize, areasArray);
return (0);
}
//**************************************************************
void getAverage(int arraySize, int areasArray[])
{
double average=0, total=0;
if(arraySize==0)
cout<<"No areas to work with";
else
{
for (int i=0; i<arraySize; i++)
{
total=total + areasArray[i];
}
average=total/arraySize;
cout<<"The average of all areas is:"<<average<<endl;
}
}
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