For loop in C++ - Mini Project: Build & Apply

For Loop Practice in C++

📖 Scenario: You are helping a small store owner who wants to calculate the total price of items sold. Each item has a price, and the owner wants to add them up using a simple loop.

🎯 Goal: Build a C++ program that uses a for loop to sum the prices of items in an array and print the total.

📋 What You'll Learn

Create an array called prices with the exact values: 10, 20, 30, 40, 50

Create an integer variable called total and set it to 0

Use a for loop with the variable i to iterate over the prices array

Add each price to total inside the loop

Print the value of total after the loop

💡 Why This Matters

🌍 Real World

Summing prices is a common task in stores, shopping carts, and billing systems.

💼 Career

Understanding loops and arrays is essential for many programming jobs, especially those involving data processing.

1

Create the prices array

Create an integer array called prices with these exact values: 10, 20, 30, 40, 50.

C++

#include 

int main() {
    // Create the prices array here

    return 0;
}

Need a hint?

Use the syntax int prices[] = {values}; to create the array.

2

Create the total variable

Create an integer variable called total and set it to 0.

C++

#include 

int main() {
    int prices[] = {10, 20, 30, 40, 50};
    // Create the total variable here

    return 0;
}

Need a hint?

Use int total = 0; to create the variable.

3

Use a for loop to sum prices

Use a for loop with the variable i to iterate over the prices array and add each price to total inside the loop.

C++

#include 

int main() {
    int prices[] = {10, 20, 30, 40, 50};
    int total = 0;
    // Add a for loop here to sum prices

    return 0;
}

Need a hint?

Use for (int i = 0; i < 5; i++) and inside the loop add prices[i] to total.

4

Print the total

Write a std::cout statement to print the value of total.

C++

#include 

int main() {
    int prices[] = {10, 20, 30, 40, 50};
    int total = 0;
    for (int i = 0; i < 5; i++) {
        total += prices[i];
    }
    // Print the total here

    return 0;
}

Need a hint?

Use std::cout << total << std::endl; to print the total sum.