Quiz 6

Introduction to Computer Science:
Quiz 6
Sewickley Academy, 2000-2001

This is a programming quiz. You must use Visual C++ for this quiz. This quiz is closed-note: you may not use anything but your mind and a compiler (starting with a new project).

This quiz has 3 questions.

1. Write a program with the following behavior. Note that your main() function must call the functions min(), max(), middleNumber(), and power(), which you must define.

Enter 3 numbers: 3 9 -2
The square of the largest number, 9, is: 81
The smallest number, -2, raised to the middle number, 3, is: -8
Goodbye!

2. Starting with the program provided below, write the absoluteValue() function so that the program has the following behavior:

This program computes the sum of the
absolute value of all the numbers
in a range.
Enter the lo and hi values of the range: -3 5
The sum of the absolute value of
the numbers from -3 to 5 is 21.
Hit 'Enter' to exit.

Here is the incomplete program:

#include <stdio.h>
#include <iostream.h>
// NOTE: PUT YOUR absoluteValue() FUNCTION HERE!!!
void main()
{
int counter, lo, hi, sum;
cout << "This program computes the sum of the" << endl
   << "absolute value of all the numbers" << endl
   << "in a range." << endl << endl;
cout << "Enter the lo and hi values of the range: ";
cin >> lo;
cin >> hi;
sum = 0;
counter = lo;
while (counter <= hi)
{
sum = sum + absoluteValue(counter);
counter = counter + 1;
}
cout << endl << "The sum of the absolute value of " << endl
   << "the numbers from " << lo << " to " << hi
   << " is " << sum << "." << endl << endl;
cout << endl << "Hit 'Enter' to exit." << endl;
getchar();
}

3. Modify the main() function for the program in problem 2 so that it works more gracefully when hi is less than lo. That is, make it have the following behavior (look carefully at the input numbers, and note that hi is -3, and lo is 5 in this example):

This program computes the sum of the
absolute value of all the numbers
in a range.
Enter the lo and hi values of the range: 5 -3
The sum of the absolute value of
the numbers from -3 to 5 is 21.
Hit 'Enter' to exit.

See Course Home Page.