added usage

Author: beast177

snippets/cpp/math-and-numbers/odd-even-check.md

@@ -1,8 +1,8 @@
 ---
 title: cpp, number, bitwise, even, odd
-description : This code demonstrates the fastest way to check if a number is even or odd using bitwise operations. It's more efficient than using the modulor operator (%) since bitwise operations are performed at the CPU level.
-tags : cpp, number, even, odd, bitwise
-author : Beast177 
+description: This code demonstrates the fastest way to check if a number is even or odd using bitwise operations. It's more efficient than using the modulor operator (%) since bitwise operations are performed at the CPU level.
+tags: cpp, number, even, odd, bitwise
+author: Beast177 
 ---
 
 ```cpp
@@ -11,5 +11,18 @@ bool isEven(int num) {
     return !(num & 1);
 }
 
+// usage -- [odd-even]
+
+#include <iostream>
+
+int main(){
+
+    int num1 = 2;
+    int num2 = 3;
+
+    std::cout << num1 << " is " << (isEven(num1) ? "Even" : "Odd") << "\n"; // output - [Even] 
+    std::cout << num2 << " is " << (isEven(num2) ? "Even" : "Odd") << "\n"; // output - [Odd]
+}
+
 ```