Chapter 17 Programming Exercises

Exercise 1 --- Adding up Squares and Cubes

Write a program that adds up the squares and adds up the cubes of integers from 1 to N, where N is entered by the user:

Upper Limit:
5
The sum of Squares is  55
The sum of Cubes   is  225

Exercise 2 --- Power of a number

Write a program that computes X^N where X is a floating point number and N is a positive integer. The program will inform the user that N must be positive if the user enters a negative value. Of course,

XN = X * X * X * ... * X   
     --------------------
           N times

Enter X
1.3
Enter N
5

1.3 raised to the power 5 is:  3.71293

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Enter X
5.6
Enter N
-3

N must be a positive integer.

Exercise 3 --- Wedge of Stars

Write a program that will write out a wedge of stars. The user will enter the initial number of stars, and the program will write out lines of stars where each line has one few star than the previous line:

Initial number of stars:
7

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*

Exercise 4 --- Holiday Tree

Write a program that will write a tree made of stars on the terminal:

       *
      ***
     *****
    *******
   *********
  ***********
 *************
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      ***