introduced new book

content/cpp/functions.md

@@ -36,11 +36,41 @@ int square(int x) {
 Function abstraction is the ability to make a function easy to use without understanding exactly how the function works line by line. This makes it easy for other people to use your code faster. It is a good practice to make your code easy to use for other people.
 
 ## Default arguments
-
+--------------------
 Suppose you want a function to occassionaly not have values for parameters explicitly define, you can set a default value for your parameters within your function.
 
 ```c++
 void average(float num1 = 3, float num2 = 3, float num3 = 3);
 ```
 
-In this example, the default parameters were create in the function prototype. Suppose you call the function by `average();`, then without passing and values, num1, num2, and num3 were all initialized with 3 as we have define in the prototype. Default arguments also work with just one parameter. You can set whatever parameter you want to have a default argument. Also, as long as the default argument is defined in the prototype, you should not include it in the definition. __Keep in mind, default arguments must be at the end of the parameter list.__
+In this example, the default parameters were create in the function prototype. Suppose you call the function by `average();`, then without passing and values, num1, num2, and num3 were all initialized with 3 as we have define in the prototype. Default arguments also work with just one parameter. You can set whatever parameter you want to have a default argument. Also, as long as the default argument is defined in the prototype, you should not include it in the definition. __Keep in mind, default arguments must be at the end of the parameter list.__ Also __you cannot use default arguments with non-constant pass by reference types__.
+
+## Function overloading
+-----------------------
+Function overloading lets you use functions with the same name but contain different parameters.
+
+```c++
+void display(string message) {
+    std::cout << message << '\n';
+}
+
+void display(int data) {
+    std::cout << data << '\n';
+}
+```
+
+Having both of these definitions is an example of function overloading. The implementation of this is quite simple.
+
+Rules for modifying function signatures:
+
+1. # of parameters
+2. Parameter data types
+3. Pass by value / Pass by reference
+    - __Does not change signature__
+4. Addition of const modifier
+    - __Only changes signature when using Pass-by-reference__
+5. Introducing default arguments
+    - __Does not change signature_
+6. Modifying return types
+
+

content/gametheory/frontcover.md

@@ -0,0 +1,9 @@
++++
+date = '2026-03-05T18:36:18-06:00'
+draft = false
+title = 'Game Theory Notes'
+layout = 'frontcover'
+type = 'book'
+tags = 'gametheory'
+chapterno = 0
++++