Homework 6

The purpose of this assignment is to declare, call, and define function definitions for a menu based program that will mulitpy, divide, power of, validate, and find the minimum of three integers.

  Welcome to the CS2010 Homework 6 Menu
  =====================================
  1.  Multiply two integers
  2.  Divide two integers
  3.  Power of base and exponent
  4.  Check if a number is within the range 10-20
  5.  Find the minimum of a list of 3 numbers

  0.  Exit
  =====================================
  Enter selection:

From within each case statement, there will be a void function that gets the input from the user and stores the input into the referenced variables, and a second function that takes the input as parameters, does the task and will return the result. Use #defined constants for the switch statment's cases.

do{
 printMenu();
 cin >> choice;
 switch(choice) {
  case MULTIPLY:
    get_input(a, b);
    cout << "The result is " << multiply(a, b) << endl;
    break;
  case DIVIDE:
    get_input(a, b);
    cout << "The result is " << division(a, b) << endl;
    break;
  case POWER:
    get_input(a,b);
    cout << "The result is " << power(a, b) << endl;
    break;
  case IN_RANGE:
    get_input(a);
    if(do_check(a))
      cout << a << "is within range" << endl;
    else
      cout << a << "is not within range" << endl;
    break;
  case FIND_MIN:
    get_input(a,b,c);
    cout << "The min is" << find_min(a,b,c)<< endl;
    break;
  case EXIT:
    break;
  default:
    cout << "Invalid Option" << endl;
    break;
 }
}while(choice!=EXIT);
    

• void printMenu(). This function will print the menu options and prompt the user to enter a choice.
• Three versions of void get_input(). One version will have one integer argument, the second version will have two integer arguments and the third will have three integer arguments. Each will prompt the user for the required number of integers and read in to the parameters. The parameters should be passed by reference, and not pass by value.
• int multiply(int a, int b) will multiply the integers and return the result.
• double division(double a, double b) will divide the integers and return the result.
• int power(int a, int b) will take the base a and raise it the the power b and return the result. Do not use cmath's pow(b,e) function.
• bool do_check(int a) will check if the integer is in the range of 10-20. If it is in range, it will return true. Otherwise, it will return false. You will need an if statement in main() to check the return value and print the appropriate message.
• int find_min(int a, int b, int c) will find the minimum and return it.