Objectives: Perform C++ string object manipulation Understand how to manipulate
ID: 3727422 • Letter: O
Question
Objectives:
Perform C++ string object manipulation
Understand how to manipulate data using arrays
Handle input errors and invalid values
Design and create a well-structure program using C++ basic programming constructs
Description:
Write a menu-driven program that provides the following options:
Show All
Spend
Search expenses containing this string
Search expenses with greater than or equal to this amount
Exit
It allows the user to select a menu option to display all expenses, add new entry, search for a substring and find the list of entries greater a given amount.
Requirements:
The program must produce the same output as provided. The output should be formatted nicely as given.
The program must use array of structs
The program must not use global variables. In another words, it must use local variables and pass-by-value or pass-by-reference parameters.
The program must define the maximum number of entries such as 100 and keeps track of the actual count of the current number of expenses entered by the user
You should not use data file to save or read from. All operations should be done through the use of arrays and array indices.
You must write at least 2 functions.
Required error handling:
The program MUST perform the following checks:
1.Check for invalid amount (negative or 0 number)
2. Description cannot be empty.
3. Search is case-insensitive
sample (please check this)...!
D:>TrackExpensesUsingArray.exe
Welcome to my expense tracker.
Expense Tracking Menu:
1. show all
2. spend
3. search expenses containing this string
4. search expenses with greater than or equal to this amount
5. exit
Enter your option: 1
There is no expense entry available.
Expense Tracking Menu:
1. show all
2. spend
3. search expenses containing this string
4. search expenses with greater than or equal to this amount
5. exit
Enter your option: 2
Please enter the description for the expense: Monthly telephone and Internet services
Please enter the amount: 45.25
AMOUNT(45.25) DESC(Monthly telephone and Internet services)
Expense Tracking Menu:
1. show all
2. spend
3. search expenses containing this string
4. search expenses with greater than or equal to this amount
5. exit
Enter your option: 2
Please enter the description for the expense: Monthly electric, water and gas
Please enter the amount: 200.20
AMOUNT(200.2) DESC(Monthly electric, water and gas)
Expense Tracking Menu:
1. show all
2. spend
3. search expenses containing this string
4. search expenses with greater than or equal to this amount
5. exit
Enter your option: 2
Please enter the description for the expense: Rent
Please enter the amount: 1200
AMOUNT(1200) DESC(Rent)
Expense Tracking Menu:
1. show all
2. spend
3. search expenses containing this string
4. search expenses with greater than or equal to this amount
5. exit
Enter your option: 2
Please enter the description for the expense: Netflix membership
Please enter the amount: 12.90
AMOUNT(12.9) DESC(Netflix membership)
Expense Tracking Menu:
1. show all
2. spend
3. search expenses containing this string
4. search expenses with greater than or equal to this amount
5. exit
Enter your option: 2
Please enter the description for the expense: Amazon membership
Please enter the amount: 99
AMOUNT(99) DESC(Amazon membership)
Expense Tracking Menu:
1. show all
2. spend
3. search expenses containing this string
4. search expenses with greater than or equal to this amount
5. exit
Enter your option: 2
Please enter the description for the expense: Monthly gym membership
Please enter the amount: 50
AMOUNT(50) DESC(Monthly gym membership)
Expense Tracking Menu:
1. show all
2. spend
3. search expenses containing this string
4. search expenses with greater than or equal to this amount
5. exit
Enter your option: 1
Expenses:
AMOUNT(45.25) DESC(Monthly telephone and Internet services)
AMOUNT(200.2) DESC(Monthly electric, water and gas)
AMOUNT(1200) DESC(Rent)
AMOUNT(12.9) DESC(Netflix membership)
AMOUNT(99) DESC(Amazon membership)
AMOUNT(50) DESC(Monthly gym membership)
Expense Tracking Menu:
1. show all
2. spend
3. search expenses containing this string
4. search expenses with greater than or equal to this amount
5. exit
Enter your option: 3
Please enter the search string: membership
AMOUNT(12.9) DESC(Netflix membership)
AMOUNT(99) DESC(Amazon membership)
AMOUNT(50) DESC(Monthly gym membership)
Expense Tracking Menu:
1. show all
2. spend
3. search expenses containing this string
4. search expenses with greater than or equal to this amount
5. exit
Enter your option: 3
Please enter the search string: MEMBERSHIP
AMOUNT(12.9) DESC(Netflix membership)
AMOUNT(99) DESC(Amazon membership)
AMOUNT(50) DESC(Monthly gym membership)
Expense Tracking Menu:
1. show all
2. spend
3. search expenses containing this string
4. search expenses with greater than or equal to this amount
5. exit
Enter your option: 4
Please enter the amount: 50
AMOUNT(200.2) DESC(Monthly electric, water and gas)
AMOUNT(1200) DESC(Rent)
AMOUNT(99) DESC(Amazon membership)
AMOUNT(50) DESC(Monthly gym membership)
Expense Tracking Menu:
1. show all
2. spend
3. search expenses containing this string
4. search expenses with greater than or equal to this amount
5. exit
Enter your option: 4
Please enter the amount: 200
AMOUNT(200.2) DESC(Monthly electric, water and gas)
AMOUNT(1200) DESC(Rent)
Expense Tracking Menu:
1. show all
2. spend
3. search expenses containing this string
4. search expenses with greater than or equal to this amount
5. exit
Enter your option: 4
Please enter the amount: 1000
AMOUNT(1200) DESC(Rent)
Expense Tracking Menu:
1. show all
2. spend
3. search expenses containing this string
4. search expenses with greater than or equal to this amount
5. exit
Enter your option: 2
Please enter the description for the expense: Home repair and improvement
Please enter the amount: -1
Invalid amount. Amount cannot be negative or string. Please try it again.
Please enter the amount: -100
Invalid amount. Amount cannot be negative or string. Please try it again.
Please enter the amount: -1000
Invalid amount. Amount cannot be negative or string. Please try it again.
Please enter the amount: 175.75
AMOUNT(175.75) DESC(Home repair and improvement)
Expense Tracking Menu:
1. show all
2. spend
3. search expenses containing this string
4. search expenses with greater than or equal to this amount
5. exit
Enter your option: 1
Expenses:
AMOUNT(45.25) DESC(Monthly telephone and Internet services)
AMOUNT(200.2) DESC(Monthly electric, water and gas)
AMOUNT(1200) DESC(Rent)
AMOUNT(12.9) DESC(Netflix membership)
AMOUNT(99) DESC(Amazon membership)
AMOUNT(50) DESC(Monthly gym membership)
AMOUNT(175.75) DESC(Home repair and improvement)
Expense Tracking Menu:
1. show all
2. spend
3. search expenses containing this string
4. search expenses with greater than or equal to this amount
5. exit
Enter your option: 5
D:>
Explanation / Answer
#include <iostream>
#include <cstdlib>
using namespace std;
struct expenses
{
string desc;
double amount;
};
void show_all(expenses *exp, int n)
{
int i = 0;
if (n == 0)
cout << " There is no expense entry available "
<< endl;
else
{
cout << "Expenses: " << endl;
while (i < n)
{
cout << "AMOUNT(" << exp[i].amount << ") DESC(" << exp[i].desc << ")" << endl;
i++;
}
}
}
void spend(expenses *exp, int n)
{
double amount;
string desc;
getline(cin, exp[n].desc);
while (1)
{
cout << "Please enter the description for the expense: ";
getline(cin, exp[n].desc);
if (exp[n].desc != "")
break;
cout << "Invalid Description. Description cannot be empty" << endl;
}
char am[100];
while (1)
{
cout << "Please enter the amount: ";
cin >> am;
exp[n].amount = atof(am);
if (exp[n].amount > 0)
break;
cout << "Invalid amount. Amount cannot be negative or string. Please try it again." << endl;
}
cout << "AMOUNT(" << exp[n].amount << ") DESC(" << exp[n].desc << ")" << endl;
}
void search_amount(expenses *exp, int n)
{
int i = 0, search;
cout << "Please enter the amount:";
cin >> search;
while (i < n)
{
if (exp[i].amount >= search)
{
cout << "AMOUNT(" << exp[i].amount << ") DESC(" << exp[i].desc << ")" << endl;
}
i++;
}
}
void search_desc(expenses *exp, int n)
{
string search;
cout << "Please enter the search string: ";
cin >> search;
int i = 0, j, k;
j = 0;
while (j < search.length())
{
search[j] = tolower(search[j]);
j++;
}
while (i < n)
{
string d_str = exp[i].desc;
j = 0;
while (j < exp[i].desc.length())
{
d_str[j] = tolower(d_str[j]);
j++;
}
if (exp[i].desc.find(search) != string::npos)
{
cout << "AMOUNT(" << exp[i].amount << ") DESC(" << exp[i].desc << ")" << endl;
}
i++;
}
}
int main()
{
int option, n = 0;
expenses exp[100];
cout<<"Welcome to my expense tracker. "<<endl;
do
{
cout << " Expense Tacking Menu:" << endl;
cout << " 1. show all 2. spend 3. search expenses containing this string 4. search expenses with greater than or equal to this amount 5. exit" << endl;
cout << "Enter your option: ";
cin >> option;
switch (option)
{
case 1:
show_all(exp, n);
break;
case 2:
spend(exp, n);
n++;
break;
case 3:
search_desc(exp, n);
break;
case 4:
search_amount(exp, n);
break;
case 5:
exit(0);
break;
default:
cout << "Invalid choice" << endl;
}
} while (option != 5);
}
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