Loop execution flow - Mini Project: Build & Apply

Loop Execution Flow in C

📖 Scenario: Imagine you are managing a small store and want to count how many customers enter each day for a week. You will use a loop to simulate counting customers day by day.

🎯 Goal: Build a C program that uses a for loop to count customers entering the store for 7 days and prints the total number of customers at the end.

📋 What You'll Learn

Create an integer variable total_customers initialized to 0

Create a for loop with an integer variable day that runs from 1 to 7

Inside the loop, add the number of customers for each day to total_customers

Print the total number of customers after the loop ends

💡 Why This Matters

🌍 Real World

Counting totals over time is common in stores, websites, or any place where you track daily activity.

💼 Career

Understanding loop execution flow is essential for programming tasks like data processing, automation, and simulations.

1

Create the initial variable to hold total customers

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

C

#include 

int main() {
    // Create an integer variable called total_customers and set it to 0
    // Your code here
    return 0;
}

Need a hint?

Use int total_customers = 0; inside the main function.

2

Set up the loop to count days

Add a for loop with an integer variable day that runs from 1 to 7 inclusive.

C

#include 

int main() {
    int total_customers = 0;
    // Add a for loop with int day from 1 to 7
    // Your code here
    return 0;
}

Need a hint?

Use for (int day = 1; day <= 7; day++) { } to loop through days.

3

Add customers each day inside the loop

Inside the for loop, add 5 customers to total_customers each day using total_customers += 5;.

C

#include 

int main() {
    int total_customers = 0;
    for (int day = 1; day <= 7; day++) {
        // Add 5 customers to total_customers each day
        // Your code here
    }
    return 0;
}

Need a hint?

Use total_customers += 5; inside the loop to add customers.

4

Print the total number of customers

After the for loop, print the value of total_customers using printf with the message: Total customers in 7 days: %d\n.

C

#include 

int main() {
    int total_customers = 0;
    for (int day = 1; day <= 7; day++) {
        total_customers += 5;
    }
    // Print the total number of customers
    // Your code here
    return 0;
}

Need a hint?

Use printf("Total customers in 7 days: %d\n", total_customers); after the loop.