diff --git a/src/main.rs b/src/main.rs
index 3cc3d3e..c6a0c4d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -2,23 +2,90 @@ fn main() {
     intro_to_u();
 }
 
-
-// function to encapsulate all integers
 fn intro_to_u() {
-    let sum_result: u8 = sum(5, 10);
-    println!("the sum result is: {}", sum_result);   
-
+    let sum_result: u8 = sum(5, 4);
+    let sub_result: u8 = subtract(10, 5);
+    let multiply_result: u8 = multiply(10, 5);
+    let divide_result: u8 = divide(10, 5);
+    let floatsum_result: f64 = floatsum(5.5, 4.4);
+    let floatsub_result: f64 = floatsubtract(2.4, 3.5);
+    let floatmultiply_result: f64 = floatmultiply(1.0, 5.0);
+    let floatdivide_result: f64 = floatdivide(10.4, 5.3);
+    let is_even_result: bool = is_even_sum(5, 5);
+    let is_even: bool = is_even(8);
+    let full_name = fullname("Uche", "Caleb", "Solomon");
 
+    println!("The sum result is: {}", sum_result);
+    println!("The subtraction result is: {}", sub_result);
+    println!("The multiplication result is: {}", multiply_result);
+    println!("The division result is: {}", divide_result);
+    println!("The sum result is: {}", floatsum_result);
+    println!("The subtraction result is: {}", floatsub_result);
+    println!("The multiplication result is: {}", floatmultiply_result);
+    println!("The division result is: {}", floatdivide_result);
+    println!(
+        "The sum of 5 and 5 is even: {}",
+        if is_even_result { "true" } else { "false" }
+    );
+    println!("The number is: {}", is_even);
+    println!("{}", full_name);
 }
 
 fn sum(x: u8, y: u8) -> u8 {
-    x + y // implicit return
-//    return x + y; // explicit return
+    x + y
+    // return x+y;//explicit return
+}
+
+fn subtract(x: u8, y: u8) -> u8 {
+    x - y
+}
+
+fn multiply(x: u8, y: u8) -> u8 {
+    x * y
+}
+
+fn divide(x: u8, y: u8) -> u8 {
+    x / y
+}
+
+// floating point
+fn floatsum(x: f64, y: f64) -> f64 {
+    x + y
 }
 
+fn floatsubtract(x: f64, y: f64) -> f64 {
+    x - y
+}
+
+fn floatmultiply(x: f64, y: f64) -> f64 {
+    x * y
+}
+
+fn floatdivide(x: f64, y: f64) -> f64 {
+    if y != 0.0 {
+        x / y
+    } else {
+        panic!("Division by zero is not allowed");
+    }
+}
 
-// subtract
-// multiplication
-// division
 
+/// Function to check if the sum of two numbers is even
+fn is_even_sum(x: u8, y: u8) -> bool {
+    let sum = x + y;
+    sum % 2 == 0
+}
+
+fn is_even(x: u8) -> bool {
+    x % 2 == 0
+}
+
+fn fullname(first: &str, second: &str, last: &str) -> String {
+    format!(
+        "{first} {second} {last}.",
+        first = first,
+        second = second,
+        last = last,
+    )
+}