File output using ofstream in C++ - Mini Project: Build & Apply

File output using ofstream

📖 Scenario: You are creating a simple program to save a list of favorite fruits to a text file. This is useful when you want to keep a record that can be opened later or shared.

🎯 Goal: Build a C++ program that writes a list of fruits to a file called fruits.txt using ofstream.

📋 What You'll Learn

Create a vector of strings named fruits with the exact values: "Apple", "Banana", "Cherry"

Create an ofstream object named file to open fruits.txt

Use a for loop with variable fruit to write each fruit followed by a newline to the file

Close the file after writing

Print "Fruits saved to fruits.txt" to the console

💡 Why This Matters

🌍 Real World

Saving data to files is common in many programs, like saving user preferences, logs, or reports.

💼 Career

Understanding file output is essential for software developers working with data storage, logging, and configuration files.

1

Create the list of fruits

Create a std::vector<std::string> called fruits with these exact values: "Apple", "Banana", "Cherry".

C++

#include 
#include 
#include 

int main() {
    // Create the vector fruits with "Apple", "Banana", "Cherry"
    // Your code here

    return 0;
}

Need a hint?

Use curly braces {} to list the fruits inside the vector.

2

Open the file for writing

Add #include <fstream> at the top. Then create an std::ofstream object called file that opens the file named "fruits.txt".

C++

#include 
#include 
#include 
#include 

int main() {
    std::vector fruits = {"Apple", "Banana", "Cherry"};

    // Create ofstream file to open "fruits.txt"
    // Your code here

    return 0;
}

Need a hint?

Remember to include the <fstream> header to use ofstream.

3

Write fruits to the file

Use a for loop with variable fruit to write each fruit from fruits to the file followed by a newline using << operator.

C++

#include 
#include 
#include 
#include 

int main() {
    std::vector fruits = {"Apple", "Banana", "Cherry"};

    std::ofstream file("fruits.txt");

    // Write each fruit to the file with a newline
    // Your code here

    return 0;
}

Need a hint?

Use a range-based for loop to go through each fruit and write it to the file.

4

Close the file and print confirmation

Close the file using file.close(). Then print "Fruits saved to fruits.txt" to the console using std::cout.

C++

#include 
#include 
#include 
#include 

int main() {
    std::vector fruits = {"Apple", "Banana", "Cherry"};

    std::ofstream file("fruits.txt");

    for (const std::string& fruit : fruits) {
        file << fruit << "\n";
    }

    // Close the file and print confirmation
    // Your code here

    return 0;
}

Need a hint?

Call file.close() to save and close the file. Use std::cout to print the message.