Question

Write a code in c++ using linear insertion following the steps below. Comment your work.

1.    Ask the user for the name of a file containing data. If it does not exist, the program should display an error, then ask for a new file name. Entering an asterisk (*) as the first and only character on a line should terminate the program.

2.     You can use a statically-allocated one-dimensional array of doubles for this with length 100. You will never have more than 100 things to sort, but you may have fewer. Your program will have to keep track of how many elements you actually use.

3.       The way linear insertion works is this:

A.      If the list is empty, the number goes in the first array element.

B.      If the list is not empty, search to find the two elements where the top one is smaller than the one you have and the bottom one is larger (assuming an ascending-order sort.) This is your insertion point. Then move everything below and including the insertion point down in the array. Put the new element in.

C.      Increment the count of elements in the array

4.       Once the list is sorted, print it.

5.       Go back to step 2 and ask for another file name.

For example, if the file contains 6, 3, 7, and 2 your array would look like this at each step:

Step 1: Array is empty, so insert the 6.	6
Step 2: Move the 6 down, insert the 3	3 6
Step 3: Put the 7 at the end; nothing moves	3 6 7
Step 4: Move the 3, 6, and 7 down, then insert the 2.	2 3 6 7

Yes, this is terribly inefficient because of moving elements around, but it illustrates several important concepts, including sorting, functions with parameters and return values, file I/O, and array handling.

Test your code with the following numbers.

101
93.4
-9999.1
0
43
11
451
98.6
3.14
-40
0.01
256
-273
2.71
73
42
1024
9999999
216
-11.1
90.1
777.7
64
2048

Answer 1

Answer;