CS162 - Lab 09 Solutions

TABLE OF CONTENTS

• 3.1 - Integer Array – Load & Save
• 3.2 - Date Array – Load & Save
• 3.3 - Copy file
• 3.4 - Split file
• 3.5 - Merge file
• 3.6 - Bitmap File

Lab 09 - Binary File IO

• Source: PDF file

3.1 - Integer Array – Load & Save

Write a small program with $2$ features (the program should create menu options to allow user to choose one of them).

1. User enters an array of integers from keyboard. The program will save the array to a binary file.
2. User loads an array of integers from a binary file. The program will find the median and output to console.

Format of input.bin:

• $1$st number: $n$, number of elements in the array.

• Next $n$ numbers: elements in the array.

• Solution: https://ideone.com/WcATe5

3.2 - Date Array – Load & Save

Write a small program with $2$ features (the program should create menu options to allow user to choose one of them).

1. User enters an array of dates from keyboard. The program will save the array to a binary file.
2. User loads an array of dates from a binary file. The program will find the newest date and output to console.

Format of input.bin:

• $1$st number: $n$, number of elements in the array.

• Next $3n$ numbers: elements in the array.

• Solution: https://ideone.com/RR45st

3.3 - Copy file

Use command prompt argument and binary file IO techniques to create a MYCOPYFILE program.

User will enter:

MYCOPYFILE -s path_of_source_file -d path_of_destination

The destination file will have same name as the source file.

For example:

MYCOPYFILE -s D:/film.mkv -d D:/Level1/Level2/Level3

• Solution: https://ideone.com/zBGEG1

3.4 - Split file

Use command prompt argument and binary file IO techniques to create a MYSPLITFILE program.

User will enter:

MYSPLITFILE -s path_of_source_file -d path_of_destination -numpart x

x is a positive integer number, number of splitted parts. OR

MYSPLITFILE -s path_of_source_file -d path_of_destination -sizeapart x

y is a positive integer number (in bytes), size of a splitted part.

For example:

MYSPLITFILE -s D:/film.mkv -d D:/Level1/Level2/Level3 -numpart 3

OR

MYSPLITFILE -s D:/film.mkv -d D:/Level1/Level2/Level3 -sizeapart 1000000

Names of splitted parts are: film.mkv.part01, film.mkv.part02, film.mkv.part03 $\ldots$

• Solution: https://ideone.com/qT6NOb

3.5 - Merge file

Use command prompt argument and binary file IO techniques to create a MYMERGEFILE program.

User will enter:

MYMERGEFILE -s path_of_part01 -d path_of_destination

The program will find all *.part01, *.part02, *.part03 $\ldots$ files and merge into a single file. The program will print errors if there is any part does not exist.

For example:

MYMERGEFILE -s D:/Level1/Level2/Level3/film.mkv.part01 -d D:/NewLevel

• Solution: https://ideone.com/MvdXva

3.6 - Bitmap File

• Input: width and height of the flag of England
• Output: the BMP file of the flag of England
• Source: https://en.wikipedia.org/wiki/Flag_of_England
• Solution: Soon or NEVER.