Relational operators in C - Mini Project: Build & Apply

Relational Operators in C

📖 Scenario: You are creating a simple program to compare ages of two friends to see who is older.

🎯 Goal: Build a C program that uses relational operators to compare two age values and prints the comparison results.

📋 What You'll Learn

Create two integer variables named age1 and age2 with exact values 25 and 30

Create an integer variable named isOlder to store the result of the comparison

Use the relational operator > to check if age1 is greater than age2

Print the value of isOlder to show the comparison result

💡 Why This Matters

🌍 Real World

Comparing values is common in programs that make decisions, like checking ages, prices, or scores.

💼 Career

Understanding relational operators is essential for writing conditions in software development, testing, and data validation.

1

Create age variables

Create two integer variables called age1 and age2 with values 25 and 30 respectively.

C

// Your code here

Need a hint?

Use int to declare variables and assign the exact values.

2

Create comparison variable

Create an integer variable called isOlder to store the result of comparing if age1 is greater than age2.

C

#include 

int main() {
    int age1 = 25;
    int age2 = 30;
    // Your code here
    return 0;
}

Need a hint?

Declare isOlder as an integer without assigning a value yet.

3

Compare ages using relational operator

Assign to isOlder the result of the expression age1 > age2 using the relational operator >.

C

#include 

int main() {
    int age1 = 25;
    int age2 = 30;
    int isOlder;
    // Your code here
    return 0;
}

Need a hint?

Use the relational operator > to compare age1 and age2.

4

Print the comparison result

Use printf to print the value of isOlder so the program shows 0 or 1 depending on the comparison.

C

#include 

int main() {
    int age1 = 25;
    int age2 = 30;
    int isOlder;
    isOlder = age1 > age2;
    // Your code here
    return 0;
}

Need a hint?

Use printf("%d\n", isOlder); to print the integer value with a new line.