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42 Lausanne· Lausanne
Chapter 01 · Get started
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23/147 required exercises
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Foundations 1
Best13%
02
Strings & Bits
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
29/210Every exercise you've started, completed, refined and mastered.
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fix-the-warnings
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Sep 3
factorial
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Sep 3
tolower
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Sep 3
toupper
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Sep 3
isprint
Passed · 5 attempts
Sep 3
isspace
Passed · 1 attempt
Sep 3
isalnum
Passed · 3 attempts
Sep 3
isdigit
Passed · 9 attempts
Sep 3
arg_count
Passed · 49 attempts
Sep 3
fizzbuzz
Passed · 12 attempts
Sep 3
Member since 2 monthsActive Sep 3