Mastering C: Boolean Logic, String Manipulation, and Pointers

Level Up Your Coding Skills: Understanding the Sliding Window Algorithm The Sliding Window Algorithm is one of the most essential techniques for tackling array, string, and list problems efficiently. If you're interviewing or just want to write better code, this is a must-know! Core concepts in the video: ➡️ Why it matters: Learn how this algorithm drastically reduces time complexity (often from O(N^2) to O(N)) by avoiding redundant calculations. ➡️ What is it: It's essentially a sub-array or sub-string that "slides" through a data structure. ➡️ How it slides: We explore the key mechanics of adding elements to the right and dropping them from the left. ➡️ Fixed vs. Dynamic Windows: Understand the difference between finding a maximum sum of a fixed size 'k' (Fixed) versus finding the longest sub-string with no repeating characters (Dynamic). #SlidingWindow #Algorithms #DataStructures #CodingInterview #ProblemSolving #Programming #SoftwareDevelopment #ComputerScience #CodingTips #LearnToCode

🚀 Algorithm Challenge #15 🧠 Problem Title: Calculate the area of a rectangle based on user input for its length and width. ✅ Language Used: C++ 💡 What it covers: Working with user inputs Performing arithmetic operations (multiplication) Using variables and basic math formulas Understanding how to apply logic from geometry in programming 📂 GitHub Repo: 🔗 https://lnkd.in/dGe3ZbxK 📝 Short Description: In this challenge, I wrote a simple C++ program that asks the user to enter the length and width of a rectangle, then calculates and displays the area. It’s one of the foundational examples that combines mathematical formulas with programming logic — a great step toward building more practical problem-solving skills. 💬 Feedback Welcome! I’d love to hear your thoughts or suggestions for expanding this example — maybe by adding perimeter calculation or input validation next time 👀 🔁 Stay tuned for Challenge #16 coming soon! #Cpp #Programming #CodingChallenge #Algorithms #ProblemSolving  #MathInProgramming #Geometry #LearnToCode #CodeNewbie #SoftwareDevelopment #BuildInPublic #CppProgramming #TechLearning #LogicalThinking  #100DaysOfCode #LinkedInLearning

In this program, I used a while loop to print numbers from 1 to 5 and calculate their total sum at the same time. 🔁 It’s a great example of how loops can perform multiple tasks — displaying numbers and performing calculations in one go! 🚀 ✨ Concepts Used: ➡️ Variable initialization (c = 1, sum = 0) ➡️ While loop condition (c <= 5) ➡️ Increment operators (c = c + 1, sum = sum + 1) ➡️ Output using printf() This simple logic builds the foundation for more complex algorithms in programming! 💪 #CProgramming #WhileLoop #CodingPractice #LearnToCode #ProgrammingBasics #CodeJourney #ProblemSolving 💻

🚀 Algorithm Challenge #18 🧠 Problem Title: Calculate the Area of a Circle using its Radius ✅ Language Used: C++ 💡 What it covers: Using constants (const) in C++ Applying mathematical formulas (π * r²) Working with the <cmath> library Strengthening understanding of geometry-based logic 📂 GitHub Repo: 🔗 https://lnkd.in/dw7hMReZ 📝 Short Description: In this challenge, I wrote a C++ program that calculates the area of a circle from its radius using the formula π × r². This task focuses on how to apply mathematical equations in C++, and highlights the importance of using constants and clean syntax. 💬 Feedback Welcome! I’d love to hear your feedback or see your version of the same challenge — let’s keep improving together. 🔁 Stay tuned for Challenge #19 coming soon! #Cpp #Programming #Algorithms #CodingChallenge #MathInCode #ProblemSolving #LearnToCode #Geometry #SoftwareDevelopment #BuildInPublic #TechLearning #CppProgramming #CodeNewbie #STEM #CircleArea

💡 Exploring Memory and Arrays in C Today, I explored how arrays, pointers, and memory work in the C programming language. Even though I usually work with high-level systems, diving into low-level concepts gave me a deeper understanding of how computers actually handle data in memory. Here’s what I practiced: • Using typedef to define fixed-size data types (b8, b16, b32) • Declaring and initializing arrays • Printing values and memory sizes with printf() • Exploring how pointers move across memory (int *p = stack + pc;) • Understanding what happens when you go beyond array boundaries — and why that can lead to undefined behavior It was a fun reminder that all high-level programming builds on these low-level principles. Learning C definitely sharpens your thinking about how data actually flows in a program! 🔹 #CProgramming #LearningJourney #SoftwareDevelopment #MemoryManagement #ProgrammingBasics #LinkedInLearning

🚀 Day 46 of #100DaysOfCode Today I tackled one of the classic C programming challenges: Matrix Multiplication 💥 🔢 The program takes two square matrices of size n × n as input from the user, multiplies them using nested loops, and outputs the resulting matrix. I used Variable Length Arrays (VLAs) for dynamic sizing and implemented the standard multiplication logic: 🧠 This challenge helped reinforce: Loop nesting for multidimensional arrays Matrix indexing logic Clean, symmetric output formatting for better readability 📸 I’ve kept the output structured for easy sharing and future upgrades (thinking about adding grid-style display or color-coded elements next!). 💡 Code Concepts Covered Dynamic matrix allocation User input handling Matrix multiplication algorithm Output formatting 🔧 Next Steps Thinking of adding: Input validation Grid-style matrix display Support for non-square matrices 🔗 Hashtags #Day46 #100DaysOfCode #CProgramming #CodeNewbie #LearnToCode #CodingChallenge #ProblemSolving #CodeDaily #ProgrammingInC kirti singh

🚀 Tried breaking down Pascal’s Triangle in the simplest way 👇 We’ve all seen this pattern(Pascal's Triangle) somewhere but have you ever wondered how it’s actually generated? 🤔 The question is simple: 👉 Given an integer n, generate the first n rows of Pascal’s Triangle. For example, when n = 3 💡 How this approach clicked: While thinking about how each element is formed, I realized that every value in Pascal’s Triangle is just a combination (nCr) and this relation C(n,r)=C(n,r−1)∗(n−r+1)/r , is connecting each next element with the previous one computed. This not only makes the logic cleaner but also eliminates redundant factorial computations. so, here is the code and the dry run of the solution , once you see it this way, Pascal’s Triangle feels surprisingly simple! 😄 #C++ #DSA #ProblemSolving #CodingJourney #PascalTriangle #Programming #Learn #CodeVisualization #WomenInTech

💻 #Program3 – Prime Number Checker & Range Finder Today’s coding challenge focuses on mathematical logic and optimization 🧮 I built a C program that lets users: 1️⃣ Check if a number is prime or not 2️⃣ Print all prime numbers within a given range The program uses modular arithmetic and checks divisibility only up to the square root of each number — a neat optimization that improves performance ⚡ It also handles invalid inputs (like reversed ranges) and counts how many primes were found. 🧠 Concepts practiced: Conditional statements (switch, if-else) Loops and function calls Boolean logic (true/false) Efficient use of sqrt() for prime testing Each challenge strengthens logic and problem-solving — one program at a time 💪 #100DaysOfCode #CProgramming #LearningByDoing #CodingChallenge #ProgrammersJourney #ProblemSolving #CodeNewbie

🧠 Day 37 of #100DaysOfCode 📦 Project: Number to Words Converter in C Today I built a C program that converts any number (up to 9 digits) into its word representation! 💬🔢 ✨ Highlights: Handles billions, millions, thousands, and hundreds with proper segmentation. Covers special cases like teens (10–19) and tens (20, 30, …). Modular design using arrays for digit names and a clean convert_hundreds() function. Input: 123456789 → Output: "One Hundred Twenty Three Million Four Hundred Fifty Six Thousand Seven Hundred Eighty Nine" This was a fun challenge in logic structuring and string formatting. It deepened my understanding of number decomposition and control flow in C. 💡 Next up: maybe adding support for decimals or currency formatting? 💸 🔧 Built with: C language Console I/O Arrays & conditionals #CProgramming #CodingChallenge #100DaysOfCode #CodeNewbie