Nested conditional statements - Mini Project: Build & Apply

Nested Conditional Statements

📖 Scenario: You are creating a simple program to check a person's age and determine their life stage. This is like asking a friend, "Are you a child, a teenager, or an adult?" based on their age.

🎯 Goal: Build a C program that uses nested if statements to decide if a person is a child, teenager, or adult based on their age.

📋 What You'll Learn

Create an integer variable called age with the value 15.

Create an integer variable called child_age_limit and set it to 12.

Use nested if statements to check if age is less than or equal to child_age_limit, then print "Child".

If not a child, check if age is less than or equal to 19, then print "Teenager".

If neither child nor teenager, print "Adult".

Print the result using printf.

💡 Why This Matters

🌍 Real World

Nested conditions help computers make decisions step-by-step, like deciding what message to show based on age.

💼 Career

Understanding nested conditionals is important for writing clear and correct decision-making code in many programming jobs.

1

Create the age variable

Create an integer variable called age and set it to 15.

C

int age = 0;
// Your code here

Need a hint?

Use int age = 15; inside the main function.

2

Add the child_age_limit variable

Create an integer variable called child_age_limit and set it to 12.

C

#include 

int main() {
    int age = 15;
    int child_age_limit = 0;
    // Your code here
    return 0;
}

Need a hint?

Declare int child_age_limit = 12; after age.

3

Write nested if statements to check age

Use nested if statements to check if age is less than or equal to child_age_limit, then print "Child". Otherwise, check if age is less than or equal to 19, then print "Teenager". If neither, print "Adult".

C

#include 

int main() {
    int age = 15;
    int child_age_limit = 12;
    // Your code here
    return 0;
}

Need a hint?

Use if inside else to create nested conditions.

4

Print the result

Make sure the program prints the correct life stage based on the age variable using printf. Run the program to see the output.

C

#include 

int main() {
    int age = 15;
    int child_age_limit = 12;

    if (age <= child_age_limit) {
        printf("Child\n");
    } else {
        if (age <= 19) {
            printf("Teenager\n");
        } else {
            printf("Adult\n");
        }
    }

    // Your code here
    return 0;
}

Need a hint?

Run the program and check the output is exactly "Teenager" followed by a new line.