C++ programming using Arrays

Project 5a3

Write a function called delete_repeats that has a partially filled array
of characters as a formal parameter and that deletes all repeated
letters from the array. Since a partially filled array requires two
arguments, the function will actually have two formal parameters: an
array parameter and a formal parameter of type int that gives the
number of array positions used. When a letter is deleted , the
remaining letters are moved forward to fill in the gap. This will create
empty positions at the end of the array so that less of the array is
used. Since the formal parameter is a partially filled array, a second
formal parameter of type int will tell how many array positions are
filled. This second formal parameter will be a call-by- reference
parameter and will be changed to show how much of the array is used
after the repeated letters are deleted.

For example, consider the following code:

Char a[10];

a[0]=’a’;

a[1]=’b’;

a[2]=’a’;

a[3]=’c’;

Int size = 4;

Delete_repeats(a,size);

After this code is executed , the value of a[0] is ‘a’, the value of
a[1] is ‘b’, the value of a[2] is ‘c’, and the value of size is
3.(the value of a[3] is no longer of any concern, since the partially
filled array no longer uses this indexed variable)

You may assume that the partially filled array contains only lowercase
letters. Embed your function in a suitable test program.