Generate 100 random numbers within the range of 1 to 1000.
Sort these numbers in ascending order.
Save the sorted numbers to a text file named “index.txt”, where “index” is replaced with your actual index number.
The program should use an array to store the random numbers and implement a sorting algorithm (like bubble sort or insertion sort).
My index number is 1234.

QBASIC Program to Generate, Sort, and Save Random Numbers (Index Number Based)

Here’s a QBASIC program designed to generate random numbers, sort them, and save them to a file named after your index number. In your case, the file will be named “1234.txt”.

REM Program to Generate, Sort, and Save Random Numbers

CLS

‘ Define variables and array
DIM numbers(1 TO 100) AS INTEGER
DIM i AS INTEGER, j AS INTEGER, temp AS INTEGER

‘ Generate 100 random numbers between 1 and 1000
RANDOMIZE TIMER ‘ Seed the random number generator

FOR i = 1 TO 100
numbers(i) = INT(RND * 1000) + 1
NEXT i

‘ Sort the numbers in ascending order (Bubble Sort)
FOR i = 1 TO 99
FOR j = i + 1 TO 100
IF numbers(i) > numbers(j) THEN
temp = numbers(i)
numbers(i) = numbers(j)
numbers(j) = temp
END IF
NEXT j
NEXT i

‘ Save the sorted numbers to a file named “1234.txt”
OPEN “1234.txt” FOR OUTPUT AS #1

FOR i = 1 TO 100
WRITE #1, numbers(i)
NEXT i

CLOSE #1

PRINT “Random numbers generated, sorted, and saved to 1234.txt”

END

Explanation:

1. Variable Declaration: The code starts by declaring an integer array called `numbers` to store 100 numbers. It also declares integer variables i, j, and temp, used in the loops and sorting process.

2. Random Number Generation: `RANDOMIZE TIMER` ensures that the random numbers are different each time the program runs. The `FOR` loop generates 100 random integers between 1 and 1000 (inclusive) and stores them in the `numbers` array. `INT(RND * 1000) + 1` creates a random number.

3. Sorting (Bubble Sort): This program uses the bubble sort algorithm. The outer loop iterates from the first element to the second-to-last element. The inner loop compares adjacent elements and swaps them if they are in the wrong order, moving larger elements towards the end of the array. This process continues until the entire array is sorted in ascending order.

4. Saving to File: The code opens a file named “1234.txt” for output. The `FOR` loop writes each sorted number from the `numbers` array into the file using the `WRITE #1, numbers(i)` statement. Finally, the file is closed using `CLOSE #1`.

Important Notes for Students:

* Index Number: This program saves the data to a file named after your student index number. Make sure to replace “1234.txt” with a filename using your correct student ID.
* Sorting Algorithm: While Bubble Sort is simple to understand, it is not the most efficient sorting algorithm for large datasets. Other sorting algorithms like Insertion Sort, Selection Sort, or Merge Sort could also be implemented.
* Error Handling: This program lacks error handling. In a real-world application, you should include error handling to gracefully handle situations like file write errors.

This QBASIC program effectively generates random numbers, sorts them in ascending order, and saves them to a text file, addressing the original request using the provided index number as the file name. This is a basic introduction to random number generation, sorting, and file I/O in QBASIC.