Chapter 8: Programming ExercisesΒΆ

```1. One very useful search algorithm for sorted lists is the
binary search.  Write a program that will display the

0. Quit
1. Input Names
2. Sort Names
3. Search for Name

The program will prompt for an input of a last name and
store the name into an array of pointers,  **char
*theNames[20]**.  A maximum of twenty names will be
input or until the user indicates completion of input.
The array can be sorted in ascending order using the
bubble sort algorithm.  A given name can be searched for
with the binary search algorithm. The algorithm is as
follows:

A.  Divide the sorted list into two halves.
B.  Compare the element searched for with the midpoint
element.
C.  If the midpoint element is equal to the searched
element, then we are finished.  If not, determine
which sublist the element should be in, top or
bottom.  This is the new list to search.
D.  Repeat steps A through C until the element is found
or the searched list shrinks to zero, whichever
occurs first.

2. Write a program that prompts for the input of a text
string.  The program should loop accepting text strings
until the word 'end' is input as the only text on the
input line.  The lines input must be stored into an
array of pointers,  **char *text[20];**,
no more than twenty lines to be input and allow the user
to quit input early.  Write a function  **encrypt()**
that encrypts the text held in the array.  The
encryption algorithm will be your year of birth bitwise
exclusive or-ed with each character in the text
string.  Print the text strings before encryption and
after encryption.

3. Write a program that will find, search and replace text
strings.  The program must prompt for the input of an
initial line of text.  The program will then prompt for
a phrase to be searched for and a phrase to replace the
found phrase with.  The replacement phrase can be
shorter or longer than the searched for phrase.  Show
the updated initial line of text on the display.```

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Chapter 8: Programming Projects