If–else statement in C++ - Mini Project: Build & Apply

If-else statement

📖 Scenario: You are creating a simple program that checks if a person is old enough to vote.

🎯 Goal: Build a program that uses an if-else statement to decide if a person can vote based on their age.

📋 What You'll Learn

Create an integer variable called age with the value 20

Create an integer variable called voting_age with the value 18

Use an if-else statement to check if age is greater than or equal to voting_age

Print "You can vote." if the condition is true

Print "You cannot vote yet." if the condition is false

💡 Why This Matters

🌍 Real World

Checking age eligibility is common in many real-world applications like voting, driving licenses, or age-restricted content.

💼 Career

Understanding if-else statements is fundamental for any programming job because it helps programs make decisions based on conditions.

1

Create the age variable

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

C++

// Your code here

Need a hint?

Use int age = 20; to create the variable.

2

Create the voting_age variable

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

C++

int age = 20;
// Your code here

Need a hint?

Use int voting_age = 18; to create the variable.

3

Write the if-else statement

Use an if-else statement to check if age is greater than or equal to voting_age. Inside the if, write std::cout << "You can vote.";. Inside the else, write std::cout << "You cannot vote yet.";.

C++

int age = 20;
int voting_age = 18;
// Your code here

Need a hint?

Use if (age >= voting_age) { ... } else { ... } with the correct print statements.

4

Print the result

Add #include <iostream> at the top, wrap the code inside int main() function, and add return 0;. Then run the program to print the output.

C++

#include 

int main() {
int age = 20;
int voting_age = 18;
if (age >= voting_age) {
    std::cout << "You can vote.";
} else {
    std::cout << "You cannot vote yet.";
}
return 0;
}
// Your code here

Need a hint?

Make sure to include #include <iostream> and wrap your code in int main(). Run the program to see the output.