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100-day challenge
#100DayChallenge
Description
Book Introduction
College students who used to leave reports to ChatGPT,
He, who had only trusted AI, began to grow by creating apps every day.


At first, we left all the reports, ideas, and codes to AI.
"I thought AI would do everything... but that's not always the case. It's lacking something." But as I continued to build apps, one by one, every day, I realized it.
AI provides the answers, but how I use them is entirely up to me. The answers I asked AI ultimately reside within me.
A story about growing and becoming the subject of ChatGPT, but not relying solely on ChatGPT.

In the AI ​​era, real specs ultimately depend on me!
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index
STEP 0 Prologue 21
What do you want to do with ChatGPT? 23
Let's write a report with ChatGPT 27
Creating an Othello Game with ChatGPT 39
Upgrading to Osello with ChatGPT 47
Writing a Paper with ChatGPT 52

STEP 1 Challenge Start Days 1-6 59
Last Autumn 61
One Post 67
The Harsh Reality 72
The convenience of libraries 77

STEP 2: The Meaning of the Challenge Days 7-23 85
It'll work out somehow, right?! 87
Bug Identity 95
Orbital correction is flexible 103
The country is a person 111
It worked! 116

STEP 3: The work is up to me Day 24~31 125
Try writing a class 127
Notes are a memory aid 132
My Way 141
Is Math Necessary? 149
Exploring Turn-Based 158
ChatGPT can't surpass me 171

STEP 4: My Future and Someone's Future Days 32-50 185
My Talent 187
The Importance of Reuse 193
New Goal 203
Awareness of Internal Structure 207
The Meaning of Writing a Paper 215
Performance beyond expectations 222

STEP 5 Ideals and Reality Days 51-65 227
What's the answer? 229
Getting closer to the answer 238
Realistic Answer 244
Job Interview 249
The Importance of Data 257

STEP 6 Finding the Optimal Solution Day 66~100 267
Forms and Titles 269
Assignment App 277
284 because of the oysters
Let's try it 288
Reluctant Acceptance 294
The subject is me 300

STEP 7 Epilogue 309
Secret to Keeping Going 311
8,123 prompts 312
Spain 315

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Publisher's Review
We are now in the era of generative AI.
Are we all effectively using generative AI? To the author, ChatGPT was nothing more than a gimmick to make college papers easier to pass.
But 100 days later, the protagonist, who was an economics major, becomes a software engineer.
What happened over the past 100 days? Here's a record of those 100 days.

#100DayChallenge: Develop one app every day for 100 days and share it on social media.
Despite the daily burden of new ideas and implementation, he never gives up and continues to grow steadily with ChatGPT.
And in this process, we go beyond simply 'solving' reports and show how to use ChatGPT proactively without relying too much on it through interaction with the tool.
Growth through a tool called generative AI—perhaps this is the true skill needed in the AI ​​era?
GOODS SPECIFICS
- Date of issue: July 21, 2025
- Page count, weight, size: 320 pages | 478g | 132*205*20mm
- ISBN13: 9788966264810

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