Ternary operator in C++ - Mini Project: Build & Apply

Using the Ternary Operator in C++

📖 Scenario: You are creating a simple program to decide if a person is an adult or a minor based on their age.

🎯 Goal: Build a C++ program that uses the ternary operator to check if a person is 18 or older and print the correct message.

📋 What You'll Learn

Create an integer variable called age with the value 20

Create a string variable called status that uses the ternary operator to set 'Adult' if age is 18 or more, otherwise 'Minor'

Print the value of status

💡 Why This Matters

🌍 Real World

Ternary operators help write short and clear decisions in programs, useful in many real-world apps like age checks, pricing rules, or UI changes.

💼 Career

Understanding ternary operators is important for writing clean, efficient code in software development jobs.

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 to declare the variable and assign the value 20.

2

Create the status variable using the ternary operator

Create a string variable called status that uses the ternary operator to set it to "Adult" if age is 18 or more, otherwise "Minor".

C++

int age = 20;
// Your code here

Need a hint?

Use the syntax condition ? value_if_true : value_if_false to assign status.

3

Include the <iostream> and <string> headers and add using namespace std;

Add the lines #include <iostream>, #include <string>, and using namespace std; at the top of the program.

C++

// Your code here
int age = 20;
std::string status = (age >= 18) ? "Adult" : "Minor";

Need a hint?

These headers and namespace allow you to use string and cout easily.

4

Print the status variable

Write a main function that prints the value of status using cout.

C++

#include 
#include 
using namespace std;

int age = 20;
string status = (age >= 18) ? "Adult" : "Minor";

// Your code here

Need a hint?

Use cout << status << endl; inside main() to print the result.