Learn C, Python, Java, HTML, CSS, PHP and AI / LLM concepts with interactive lessons, an online compiler, challenges, quizzes, and a built-in AI tutor — all synced to your Blot Account.
Sign in with Blot Accounts. Your progress is saved to your account.
Structured roadmaps
Beginner → intermediate → advanced lessons with interactive examples and quick checks.
Online compiler
Write and run C, Python, Java, HTML, CSS & PHP in the browser with live output and preview.
Challenges & XP
Practice problems with tests, hints, and XP. Earn certificates as you level up.
Glen AI tutor
Ask questions, paste code, or get hints on challenges without leaving the app.
Memory visualizer
Step through variables, pointers, and linked lists to see how RAM and addresses work.
Synced with Blot
One Blot Account for identity. Progress, XP, and completed work save to the cloud.
Languages & tracks
Pick a track, follow the roadmap, practice in the compiler, and solve challenges. Sign in once with Blot to keep everything in sync.
Resume your learning path and practice in the compiler.
Streak
1
Total XP
0
Lessons
0
Challenges
0
Learning Tracks
Online Compiler
Write, run and preview C, Python, Java, HTML, CSS & PHP instantly in the browser.
Daily Challenge
Pointer Swap
Daily practice problem (+50 XP).
C Programming Roadmap
Structured curriculum with interactive examples.
Beginner 5 min+20 XP
Lesson Title
Interactive Example
OUTPUT
Key Takeaways
Quick Check
Online Compiler
Practice C · Python · Java · HTML · CSS · PHP with instant feedback
main.cC99
Console
// Output appears here after Run…
›
Runs on real compilers (gcc, OpenJDK, CPython, PHP). If your code uses scanf / input(), type each value in the terminal under the console and press Enter.
Problem Set
Competitive-style problems · automated judges · structured like HackerRank
#—·C
Easy+40 XP
Title
Problem
Input Format
Output Format
Constraints
Sample Input
Sample Output
Explanation
Solution
Test Cases
Hidden cases run on Submit · Sample shown above
Submit to evaluate against all test cases.
Quizzes
Test knowledge across all supported languages.
QuizQ 1 / 10
Examples Library
Ready-to-run snippets for every language.
Hands-on Projects
Build portfolio-ready applications.
Memory & Pointer Visualizer
Interactive diagrams for RAM, pointers and data structures (C-focused).
Variable Allocation
Click Step to walk through memory changes.
Coder
Level 1
Dev Code Member
0 XP0 Lessons0 Solved
Certificates
Beginner Developer
Complete 10 beginner lessons
Intermediate
Complete intermediate track
Advanced
Master data structures
Multi-Lang Master
Earn 500 XP across languages
Global Rankings
Live leaderboard · Blot Devs
#
Learner
XP
Solved
Level
Settings
Account & data preferences.
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Cloud sync ready
Progress
Glen AI
Programming tutor
G
Glen AI tutor. Ask about languages, algorithms, or paste code for review.
Welcome to Dev Code
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Certificate Preview
ID: C-00000-2026
Certificate of Achievement
Presented to
Coder
For successfully completing the Beginner Curriculum on Dev Code.