Project #1: MathLibrary1

                        
                            pragma solidity ^0.8.0;
                            
                            contract MathLibrary1 {
                                
                                // This variable is available to easily view the result of the math operation
                                
                                int public result;

                                function sum(int num1, int num2) public {
                                    int sum = num1 + num2;

                                    result = sum;
                                    
                                  // This function can also be shortened to just
                                  // result = num1 + num2;
                                    
                                }

                                function difference(int num1, int num2) public {
                                    result = num1 - num2;
                                }

                                function multiplyOperator(int num1, int num2) public {
                                    result = num1 * num2;
                                }

                                function multiplyLoop(int num1, int num2) public {
                                    int product = 0;

                                    for (int i = 0; i < num2; i++) {
                                        product += num1;
                                    }

                                    result = product;
                                }

                                function divide(int num1, int num2) public {
                                    // Note that this function will not return rational numbers

                                    if (num2 == 0) {
                                        // If a division by zero case were to occur, the result will be set to a default 0
                                        result = 0;
                                    }
                                    else {
                                        result = num1 / num2;
                                    }
                                }
                            }