cppbeginner10 minutes

Simple Console Budget Tracker in C++

Build a beginner-friendly console application that helps users track their daily expenses and remaining budget.

Challenge prompt

Create a C++ program that allows the user to enter their total budget for a day and then input multiple expenses one by one. After each expense, display the remaining budget. The user should be able to stop entering expenses by typing a sentinel value (e.g., 0). When the user finishes, display the total expenses and how much budget remains (or if they have overspent).

Guidance

• Use a loop to continuously accept expense inputs until the user enters 0.
• Maintain variables to keep track of total expenses and remaining budget.
• Use simple input/output statements to interact with the user.

Hints

• Initialize total expenses to 0 before starting to take inputs.
• Subtract each expense from the remaining budget after input.
• Check if the input is the sentinel value (0) inside the loop to stop taking expenses.

Starter code

#include <iostream>
using namespace std;

int main() {
    double budget, expense, totalExpenses = 0;

    cout << "Enter your total budget for the day: ";
    cin >> budget;

    cout << "Enter your expenses one by one (enter 0 to finish):\n";
    while (true) {
        cin >> expense;
        // Your code to process each expense goes here
    }

    // Output total expenses and remaining budget
    
    return 0;
}

Expected output

Enter your total budget for the day: 100 Enter your expenses one by one (enter 0 to finish): 20 Remaining budget: 80 15.50 Remaining budget: 64.5 0 Total expenses: 35.5 Remaining budget: 64.5

Core concepts

variablesloopsconditionalsbasic I/O

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