// This is the header file for the maths module example
// The header file will contain:
//     - any #define
//     - function prototypes and any comments

// I want to be able to implement squaring a number, sum numbers, circumference

#define PI 3.14 

// Squaring a number - prototype for calculating a square of a numbers
// Input - a number to square
// Output - the squared number
int square(int number);

//Sum numbers - prototype for calculating the sum of two numbers
// Input - two numbers
// Output - the sum of those two numbers
int sum(int number1, int number2);

//Circumference - prototype for circumference of circle
// Input - radius int
// Output - circumference double
double circumference(int radius);