C++ explaination for use of inline and const keywords; and recursive functions

CPP_CheatSheet.cpp

#include <iostream>
#include <string>
using namespace std;

enum Animals { Bear, Cat, Chicken };
//enum Birds { Eagle, Duck, Chicken }; // error! Chicken has already been declared!

enum class Fruits { Apple, Pear, Orange };
enum class Colours { Blue, White, Orange }; // no problem!

inline int test(const int i)//inline key word 'REQUEST' compiler to place the function code inline saving procedural calls and rets.
{
	//i = 6; //const parameter so cant change it
	int a = 5;
	cout << i << endl;
	return a * a;
}

float recursive(float j)
{
	if (j > 1000)
		return 77777;
	return recursive(j * j);
}


float recursive(float j, float k)//function overloading
{
	return j + k;
}

int main()
{
	const int i = 34;
	int j = 23;
	//i = 34; //error as const i cannot be changed
	int arr1[i];
	//int arr2[j];//array size must be fixed
	int* arr3 = new int[j];//variable size array using keyword 'new'

	
	const int* a = &i;//const pointer that point to addr of const variable
	//int const* b = &j;//error as const point that point to addr of non const j
	int* const c = new int(4);//address in *c is constant
	//c= new int(4)//error as c is a const point that point to the previous variable int
	//void my_Func() const; //can be added to function declaratrion in Class 
	test(5);
	int k;
	k = recursive(10);
	cout << k << endl;

	cout << recursive(33, 44) << endl;
	getchar();
	getchar();


	 



	return 0;
}