Introduction

Flashcards are a great way to improve your memory retention, whether you’re studying for exams or learning new concepts. This program provides a basic flashcard application that allows users to study by answering questions. It will display a question (front side of the flashcard) and wait for the user’s answer. The user can see the correct answer (back side of the flashcard) after responding.

Objective

The objective of this program is to create an interactive flashcard app that helps you test your knowledge. It will prompt the user with a question and allow them to enter an answer. The app will then check whether the answer is correct and provide feedback.

C Program Code

#include 
#include 

#define NUM_CARDS 3

// Structure to represent a flashcard
struct Flashcard {
    char question[100];
    char answer[100];
};

// Function to display flashcard question and check answer
void display_flashcard(struct Flashcard card) {
    char user_answer[100];
    printf("Question: %s\n", card.question);
    printf("Your Answer: ");
    fgets(user_answer, sizeof(user_answer), stdin);
    user_answer[strcspn(user_answer, "\n")] = '\0';  // Remove newline character

    if (strcmp(user_answer, card.answer) == 0) {
        printf("Correct! Well done.\n");
    } else {
        printf("Incorrect! The correct answer is: %s\n", card.answer);
    }
}

int main() {
    // Define a set of flashcards
    struct Flashcard flashcards[NUM_CARDS] = {
        {"What is the capital of France?", "Paris"},
        {"What is the square root of 16?", "4"},
        {"Who wrote 'Romeo and Juliet'?", "Shakespeare"}
    };

    printf("Welcome to the Flashcard Study App!\n");

    // Loop through the flashcards and display them
    for (int i = 0; i < NUM_CARDS; i++) {
        display_flashcard(flashcards[i]);
    }

    printf("Thanks for using the Flashcard Study App. Happy studying!\n");
    return 0;
}

Program Explanation

The program is designed to simulate a flashcard study session. Here’s how the code works:

• Structure Definition: A structure called Flashcard is defined to hold the question and answer for each flashcard.
• Function to Display Flashcards: The display_flashcard function takes a flashcard as an argument, prints the question, and waits for user input. It compares the user’s answer to the correct answer and provides feedback accordingly.
• Main Function: In the main function, we define an array of flashcards, each with a question and an answer. The program then iterates through each card and displays it using the display_flashcard function.

The user can input their answers, and after each flashcard, they are informed if their answer is correct or incorrect.

How to Run the Program

To run this C program, follow these steps:

1. Install a C Compiler: Ensure that you have a C compiler installed on your machine. If not, download and install GCC (GNU Compiler Collection) or any other C compiler.
2. Write the Code: Copy the above C code into a text editor and save the file with a .c extension, e.g., flashcard_app.c.
3. Compile the Program: Open a terminal (or command prompt) and navigate to the directory where the file is saved. Run the following command to compile:

   gcc flashcard_app.c -o flashcard_app

4. Run the Program: After successful compilation, run the program by typing:

   ./flashcard_app

5. Start Studying: The program will display each flashcard, and you can interact with it by typing your answers.