Community Assist Use Cases

Here are some use cases that describe how the various actors will use the
community Assist application

Excercise 1 chapter 3 and arrays

Here is the code we did in class

#include 
using namespace std;

void ConvertInches(int inches);

int main()
{
   cout << "Please Enter your height in inches." << endl;
   int inch;
   cin << inch;
   ConvertInches(inch);
   
   char c;
   cin << c;
}

void ConvertInches(int inches)
{
    const int FOOT=12;
    int heightInFeet = inches / FOOT;
    int remainingInches = inches % FOOT;
    
    cout << "you are " << heightInFeet << " feet and " 
    << remainingInches << " inches tall." << endl;
    
}

Here is the code for the arrays

#include 
#include  //add the string library
using namespace std;

int main()
{
    const int size =5; //declare a constant
  
    int myArrayb[size]; //arrays require a constant for limit
 
    int myArray[4] = {4,7,23,16}; //initialize the array
    
    char name[]="George Jetson";//character array

   
    //this gets the character array and the length of
    //the character array and then choses the fifth character
    //from the array
   cout << "Your name is "<< name << "there are " 
    << strlen(name)  << " characters in your name" 
    << "The fifth character is " << name[4] <<
    endl; 
    
    //gets the third element from the first array
    cout << "the 3rd element is " << myArray[2] << endl;
    
    //use of getline with a character array
    cout << "enter your first and last name" << endl; 
    char fullName[25];
    cin.getline(fullName, 25);
    
    string address; //declare a variable as string
    cout << "Enter your address" << endl;
    //use string getline
    getline(cin, address);
    
   cout << "Your name is " << fullName << endl;
   cout << "Your address is " << address << endl;
   
   //just pause the program waiting for a character
   //to be entered
    char c;
    cin << c;
   
    
}

First C++

Here is the first C++ code example:

#include <iostream>
#include <string>
#include <cmath>
using namespace std;

int cube(int); //function prototype

int main()
{
/* this is a simple hello application
the comment can cross 
several lines */
    cout << "Enter your name" << endl;
    char name[25];
    cin.getline(name, 25);
    
    cout <<  "Hello," << name  << endl;
   
    cout << "Enter a number" << endl;
    int num;
    cin >> num;
    cout << "the cube of " << num << " is " << cube(num) << endl;
    cout << "The square root of " << num << " is " << sqrt((double)num) << endl;
    //this is just to pause the console
    char c; //declare a character type variable
    cin >> c; //wait for console entry
}

int cube (int x)
{
    return x * x * x;
}

Misc Object Oriented concepts

An enumeration allows you to name a series of items only once and then use them everywhere. Here is the code for an enumeration of days of the week

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ScanCard1
{
public enum DaysOfWeek
{
Sunday,
Monday,
Tuesday,
Wednesday,
Thursday,
Friday,
Saturday,
}
}

A structure allows you to create a complex type. Again it is a way of keeping you from having to rewrite the same information over and over. Here is a stucture for addresses.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ScanCard1
{
public struct Address
{
string address1;
string address2;
string city;
string state;
string zipcode;


}
}

An interface is sometimes referred to as a contract. An interface consists only of method signatures. any class that implements an interface MUST implement all its methods. Here is the interface:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ScanCard1
{
public interface iManage
{
void Add(object s);

void Edit(object s);

void Remove(object s);
}
}

Here is a clsss that implements the IManage interface

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ScanCard1
{
class ManageScan:iManage
{
#region iManage Members

void iManage.Add(object s)
{
throw new NotImplementedException();
}

void iManage.Edit(object s)
{
throw new NotImplementedException();
}

void iManage.Remove(object s)
{
throw new NotImplementedException();
}

#endregion
}
}

Finally, here is an Abstract Class. It is a sort of a combination of an interface and a structure. It cannot be instantiated in itself. Only its children can be instantiated. Here is an abstract class.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ScanCard1
{
public abstract class Class1
{
private int FirstName;

public int FirstName1
{
get { return FirstName; }
set { FirstName = value; }
}
private int LastName;

public int LastName1
{
get { return LastName; }
set { LastName = value; }
}

public virtual void GetPersonInfo()
{

}
}
}

I will do a program soon that uses all these elements to provide a working example