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Write BITMAP file & Word Frequency Counter programs in C
143 students

Write BITMAP file & Word Frequency Counter programs in C

Write .bmp file from Scratch in C and Implement Word Frequency Counter using Binary Search Tree in C
Created byKashinath Chillal, Aloraq Software Academy
Last updated 3/2026
English
English

What you'll learn

  • Coding BITMAP file from Scratch in C
  • Coding Binary Search Tree to store C string (char*) data type
  • Use BST to implement Word Frequency counter
  • Reading text file and writing binary data to file

Course content

2 sections • 9 lectures • 1h 36m total length

  • Bitmap file format - theory2:31

    Explore the bitmap file format in C by understanding the 14-byte header and 40-byte info header, signature 'BM', 24-bit RGB pixel data, and no compression for writing bmp files.

  • Write Bitmap file headers - Coding11:38

    Define BITMAPFILEHEADER and BITMAPINFOHEADER in C with 14- and 40-byte headers, handle padding, and implement command-line width and height input for writing bitmap.bmp in binary.

  • Write Bitmap pixel data - Coding21:00

    Learn to create a BMP file in C by computing width, height, and row padding, building bitmap headers, and writing pixel data row by row using an RGB pixel struct.

Requirements

  • C programming skills
  • Theoretical knowledge of Binary Search Tree

Description

In this course we will do live coding of:

1. Writing BITMAP file from Scratch in C

2. Word Frequency Counter Program in C using Binary Search Tree (BST).

While coding the programs, I am also sharing the thought process which goes on while implementing the logic. We will face compile-time, run-time errors and then we will resolve them.

.bmp file format is one of the very common uncompressed, raster digital image file format.

Binary Search Tree (BST) is one of the fundamental data structures used in software development. We use BST to implement Word Frequency Counter and get 20 highest frequency words from input text file.

In this course we will do hands-on coding of 2 programs:

  1. Writing BITMAP file from Scratch in C

    1. Understand .bmp file headers and do the implementation

    2. RGB pixel data format and padding

  2. Word Frequency Counter Program in C using Binary Search Tree (BST)

    1. Modify 'integer BST' to store strings (char*)

    2. Read and process text from .txt file

    3. Store words and their frequency in BST

    4. Extract top 20 high frequency words from BST

Different C concepts used during development:

malloc(), sizeof(), free(), typedef, structures, strtok, strcpy, strcmp, linked lists, gcc compiler, VS Code editor.

Who this course is for:

  • Entry level software engineers
  • C developers who want to work on real world software programs

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