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Chapter 01 · Get started
First program
172/3592 XP0/7 checkpoints validated
12/147 required exercises
View pathTECHNICAL SKILLS
CHALLENGE ACHIEVEMENTS
1/16 passed01Completed
Foundations 1
Best100%
02Retry
Strings & Bits
Best0%
03
Lists, Math & Bases
04
Algorithms & Parsers
05
Strings from Scratch
06
Memory & Pointers
07
Rebuild the C Standard Library
08
Mastery
09
Algorithms & Parsing
10
Systems & Processes
11
Network Systems
12
Grids & Simulation
13
Pointers & Memory
14
C Language Core
15
Data Structures
16
Sort & Search
EXERCISE MASTERY
14/210Every exercise you've started, completed, refined and mastered.
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In progress
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Mastered
STREAK
0daysExercises, challenges and checkpoints you cleared, day by day over the last 22 weeks.
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ACTIVITY
Recent exercise and challenge runs.
swap_int
Passed · 2 attempts
Sep 15
fix-the-prototype
Retry · 1 attempt
Sep 3
Strings & Bits
Abandoned · 0/8 levels · 180 min
Sep 2
last_arg
Passed · 5 attempts
Aug 29
putchar
Retry · 10 attempts
Sep 15
Strings & Bits
Abandoned · 0/8 levels · 180 min
Aug 24
div_mod_floor
Retry · 1 attempt
Aug 21
fizzbuzz
Passed · 5 attempts
Aug 21
swap_str
Passed · 29 attempts
Aug 21
Strings & Bits
Abandoned · 0/8 levels · 180 min
Aug 21
Member since 2 monthsActive Sep 15