Recall Assignment 4:

Recall Assignment 1:

Write a C++ program that takes in five integers from user input. After reading in the
numbers, you should prompt the user for one of five options:

1) Find the smallest integer
2) Find the largest integer
3) Find the average of the integers
4) Find the sum of all numbers
5) Find the product of all five numbers.

After taking in the user’s choice, your program should perform the corresponding option,
print out the result and terminate.

Modify Assignment 1 as follows:

1. Your program should utilize a loop that allows the user to enter options 3 times, and
print out the results of those options.
2. You will need to read in a variable amount of numbers for the each of the five options.
Continue to take input from the user until they enter a 999 for each of these.
3. Your average option needs to be able to display a decimal result.
4. You will need to incorporate for loops and switch statements in this assignment.

Your assignment is to write three functions – menu, findResult, printResult.

The menu function doesn’t take in any arguments. It prints out to the screen the five
options that the user can make: smallest, largest, average, sum, and product (just as with
Assignment 4). It takes input from the user, indicating his/her choice. This choice is
returned.

The findResult function doesn’t return anything. It takes a single argument, an integer,
which represents the user’s choice of calculation to perform. The function takes in input
until the user enters 999 and calculates the result. The option selected, the number of
inputs, and the result is sent on to the printResult function.

The printResult function doesn’t return anything, and it takes three arguments – an
integer representing the user’s choice, an integer representing the number of inputs, and a
double, representing the result of the calculations/comparisons. The printResult function
prints the results of the user’s choice and however many inputs.

You are supplied with a main and the prototypes for this assignment. Your job is to write
the three functions that will allow the program to work. Use the sample output as a guide
for the expected output for this assignment.

For expected output, you can refer back to the expected output for Assignment 4.

Please select from the following options:
1) Find the smallest number.
2) Find the largest number.
3) Find the average of numbers.
4) Find the sum of numbers.
5) Find the product of numbers.
Your choice: 3


Enter a number (or 999 to quit): 1
Enter a number (or 999 to quit): 2
Enter a number (or 999 to quit): 3
Enter a number (or 999 to quit): 4
Enter a number (or 999 to quit): 5
Enter a number (or 999 to quit): 6
Enter a number (or 999 to quit): 999
The average of the 6 numbers is: 3.5


Please select from the following options:
1) Find the smallest number.
2) Find the largest number.
3) Find the average of numbers.
4) Find the sum of numbers.



5) Find the product of numbers.
Your choice: 4


Enter a number (or 999 to quit): 15
Enter a number (or 999 to quit): 16
Enter a number (or 999 to quit): 17
Enter a number (or 999 to quit): 999
The sum of the 3 numbers is: 48


Please select from the following options:
1) Find the smallest number.
2) Find the largest number.
3) Find the average of numbers.
4) Find the sum of numbers.
5) Find the product of numbers.
Your choice: 5


Enter a number (or 999 to quit): 6
Enter a number (or 999 to quit): 7
Enter a number (or 999 to quit): 21
Enter a number (or 999 to quit): 1
Enter a number (or 999 to quit): 999
The product of the 4 numbers is: 882


A second run:

Please select from the following options:
1) Find the smallest number.
2) Find the largest number.
3) Find the average of numbers.
4) Find the sum of numbers.
5) Find the product of numbers.
Your choice: 1


Enter a number (or 999 to quit): 12
Enter a number (or 999 to quit): -1
Enter a number (or 999 to quit): -19
Enter a number (or 999 to quit): 25
Enter a number (or 999 to quit): -25
Enter a number (or 999 to quit): -2
Enter a number (or 999 to quit): -6
Enter a number (or 999 to quit): 999
The smallest of the 7 numbers is: -25



Please select from the following options:
1) Find the smallest number.
2) Find the largest number.
3) Find the average of numbers.
4) Find the sum of numbers.
5) Find the product of numbers.
Your choice: 2


Enter a number (or 999 to quit): -86
Enter a number (or 999 to quit): -16
Enter a number (or 999 to quit): -1
Enter a number (or 999 to quit): -19
Enter a number (or 999 to quit): -2
Enter a number (or 999 to quit): 0
Enter a number (or 999 to quit): 999
The largest of the 6 numbers is: 0


Please select from the following options:
1) Find the smallest number.
2) Find the largest number.
3) Find the average of numbers.
4) Find the sum of numbers.
5) Find the product of numbers.
Your choice: 3


Enter a number (or 999 to quit): 1
Enter a number (or 999 to quit): 2
Enter a number (or 999 to quit): 3
Enter a number (or 999 to quit): 4
Enter a number (or 999 to quit): 5
Enter a number (or 999 to quit): 6
Enter a number (or 999 to quit): 7
Enter a number (or 999 to quit): 8
Enter a number (or 999 to quit): 9
Enter a number (or 999 to quit): 10
Enter a number (or 999 to quit): 999
The average of the 10 numbers is: 5.5


The .cpp file is due Tuesday, October 19, 2010, by 9am.

Assignment 1

//Your information here
//Solution - Assignment 1
#include<iostream>
   using namespace std;

    int main(){
   //variable declarations
      int number1, number2, number3, number4, number5; //five integers from user
      double result; //result of a calculation/comparison
      int choice; //variable receiving the user's menu choice.

   //prompting for user input:
      cout<<"Enter your five numbers"<<endl;
   //input:
      cin>>number1>>number2>>number3>>number4>>number5;
   /*Also acceptable:
   cin>>number1;
   cin>>number2;
   cin>>number3;
   cin>>number4;
   cin>>number5;
   */

   //print out the menu:
      cout<<"Please select from the following options:"<<endl;
      cout<<"1) Find the smallest number."<<endl;
      cout<<"2) Find the largest number."<<endl;
      cout<<"3) Find the average of the five numbers."<<endl;
      cout<<"4) Find the sum of the five numbers."<<endl;
      cout<<"5) Find the product of the five numbers."<<endl;
      cout<<"Your choice: ";
   //get the user's choice:
      cin>>choice;
      result = number1; //necessary for comparisons; options 3-5, it will be overwritten
      if (choice == 1){//smallest
         if (number2<result){//compare between number1 and number2
            result = number2;
         }
         if (number3<result){//compare between smallest and number3
            result = number3;
         }
         if (number4<result){//compare between smallest and number4
            result = number4;
         }
         if (number5<result){//compare between smallest and number5
            result = number5;
         }
         cout<<"The smallest number is: "<<result<<endl;
      }
      if (choice == 2){//largest
         if (number2>result){//compare between number1 and number2
            result = number2;
         }
         if (number3>result){//compare between largest and number3
            result = number3;
         }
         if (number4>result){//compare between largest and number4
            result = number4;
         }
         if (number5>result){//compare between largest and number5
            result = number5;
         }
         cout<<"The largest number is: "<<result<<endl;
      }
      if (choice == 3){//average
         result = (number1+number2+number3+number4+number5)/5.0;
         cout<<"The average of the five numbers is: "<<result<<endl;
      }
      if (choice == 4){//sum
         result = number1+number2+number3+number4+number5;
         cout<<"The sum of the five numbers is: "<<result<<endl;
      }
      if (choice == 5){//product
         result = number1*number2*number3*number4*number5;
         cout<<"The product of the five numbers is: "<<result<<endl;
      }
	  system("PAUSE");
      return 0;
   }


Assignment  4

//Your information here
//Solution - Assignment 1
#include<iostream>
using namespace std;

    int main(){
	  //variable declarations
      int number;
      double result; //result of a calculation/comparison
      int choice; //variable receiving the user's menu choice.
      int input, loopcounter = 0;


      //print out the menu:
      for (int counter = 0; counter<3; counter++){
         cout<<"Please select from the following options:"<<endl;
         cout<<"1) Find the smallest number."<<endl;
         cout<<"2) Find the largest number."<<endl;
         cout<<"3) Find the average of numbers."<<endl;
         cout<<"4) Find the sum of numbers."<<endl;
         cout<<"5) Find the product of numbers."<<endl;
         cout<<"Your choice: ";
         //get the user's choice:
         cin>>choice;
         switch(choice){
            case 1: //smallest
               loopcounter = 0;
               cout<<"Enter a number (or 999 to quit): ";
               cin>>number;
               while(number!=999){
                  if (loopcounter == 0) result = number;
                  else if (number<result) result = number;
                  loopcounter++;
                  cout<<"Enter a number (or 999 to quit): ";
                  cin>>number;
               }
               cout<<"The smallest of the "<<loopcounter<<" numbers is: "<<result<<endl;

               break;
            case 2: //largest
               loopcounter = 0;
               cout<<"Enter a number (or 999 to quit): ";
               cin>>number;
               while(number!=999){
                  if (loopcounter == 0) result = number;
                  else if (number>result) result = number;
                  loopcounter++;
                  cout<<"Enter a number (or 999 to quit): ";
                  cin>>number;
               }
               cout<<"The largest of the "<<loopcounter<<" numbers is: "<<result<<endl;
               break;
            //for cases 3, 4, and 5, this is similar to the sentinel-controlled example - p. 157-158
            case 3: //average
               result = 0; //running total, as with option 4
               loopcounter = 0;
               cout<<"Enter a number (or 999 to quit): ";
               cin>>input;
               while(input != 999){
                  result += input;
                  loopcounter++;
                  cout<<"Enter a number (or 999 to quit): ";
                  cin>>input;
               }
               result /= loopcounter;
               cout<<"The average of the "<<loopcounter<<" numbers is: "<<result<<endl;
               break;
            case 4: //sum
               result = 0;
               loopcounter = 0;
               cout<<"Enter a number (or 999 to quit): ";
               cin>>input;
               while(input != 999){
                  result += input;
                  loopcounter++;
                  cout<<"Enter a number (or 999 to quit): ";
                  cin>>input;
               }
               cout<<"The sum of the " <<loopcounter<<" numbers is: "<<result<<endl;
               break;
            case 5://product - instead of adding, as in 3 and 4, keep a running "multiplication"
               result = 1; //identity idea in math - anything * 1 gives me that value; multiply by zero, get 0...
               loopcounter = 0;
               cout<<"Enter a number (or 999 to quit): ";
               cin>>input;
               while(input != 999){
                  result *= input;
                  loopcounter++;
                  cout<<"Enter a number (or 999 to quit): ";
                  cin>>input;
               }
               cout<<"The product of the " <<loopcounter<<" numbers is: "<<result<<endl;
               break;

         }
      }
      system("PAUSE");
      return 0;
   }