Why conditional logic is needed in C++ - See It in Action

Why conditional logic is needed

📖 Scenario: Imagine you are creating a simple program that decides if someone can enter a movie theater based on their age.

🎯 Goal: You will build a program that uses conditional logic to check if a person is old enough to watch a movie.

📋 What You'll Learn

Create an integer variable called age with the value 18

Create an integer variable called minimum_age with the value 13

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-life programs like checking if someone can enter a place, if a password is correct, or if a number is positive or negative.

💼 Career

Understanding conditional logic is essential for all programming jobs because it allows software to make decisions and respond differently to different situations.

1

Create the age variable

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

C++

// Your code here

Need a hint?

Use int to create a whole number variable.

2

Set the minimum age

Create an integer variable called minimum_age and set it to 13.

C++

int age = 18;
// Your code here

Need a hint?

This variable will hold the minimum age allowed to watch the movie.

3

Add the conditional check

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

C++

int age = 18;
int minimum_age = 13;
// Your code here

Need a hint?

The condition inside if uses >= to compare the two values.

4

Print the result

Inside the if block, print "Access granted". Add an else block that prints "Access denied".

C++

int age = 18;
int minimum_age = 13;
if (age >= minimum_age) {
    // Your code here
}
// Your code here

Need a hint?

Use std::cout to print text to the screen.