Why conditional logic is needed - See It in Action

Why conditional logic is needed

📖 Scenario: Imagine you are creating a simple program that decides if a person can enter a club based on their age. The club only allows people who are 18 years old or older.

🎯 Goal: You will build a small C program that uses conditional logic to check a person's age and print whether they can enter the club or not.

📋 What You'll Learn

Create an integer variable called age with the value 20

Create an integer variable called minimum_age with the value 18

Use an if statement to check if age is greater than or equal to minimum_age

Print "Access granted" if the condition is true

Print "Access denied" if the condition is false

💡 Why This Matters

🌍 Real World

Conditional logic is used in many real-world programs to make decisions, like checking user age for access, validating input, or controlling game rules.

💼 Career

Understanding conditional logic is essential for any programming job because it allows software to respond to different situations and user inputs.

1

Create the age variable

Create an integer variable called age and set it to 20.

C

#include 

int main() {
    // Create an integer variable called age and set it to 20
    // Your code here

    return 0;
}

Need a hint?

Use int age = 20; inside the main function.

2

Create the minimum age variable

Create an integer variable called minimum_age and set it to 18.

C

#include 

int main() {
    int age = 20;
    // Create an integer variable called minimum_age and set it to 18
    // Your code here

    return 0;
}

Need a hint?

Use int minimum_age = 18; inside the main function.

3

Add conditional logic to check age

Use an if statement to check if age is greater than or equal to minimum_age. Inside the if, write printf("Access granted\n");. Use else to write printf("Access denied\n");.

C

#include 

int main() {
    int age = 20;
    int minimum_age = 18;
    // Use if to check if age >= minimum_age
    // Print "Access granted" if true
    // Use else to print "Access denied" if false
    // Your code here

    return 0;
}

Need a hint?

Use if (age >= minimum_age) { ... } else { ... } to decide what to print.

4

Print the result

Run the program and print the output. The program should print Access granted because age is 20 and minimum_age is 18.

C

#include 

int main() {
    int age = 20;
    int minimum_age = 18;

    if (age >= minimum_age) {
        printf("Access granted\n");
    } else {
        printf("Access denied\n");
    }

    // Print the result
    // Your code here

    return 0;
}

Need a hint?

Run the program to see the message printed.