C Study Plan

📘 C STUDY PLAN

🗓️ PHASE 1: C FUNDAMENTALS (Day 1–5)

  1: Introduction to C

Learn

• History of C (Dennis Ritchie)

• Features of C

• Applications of C

• Compiler vs Interpreter

Practice

• Write first C program

• Compile & run using GCC

  2: C Program Structure

Learn

• Header files

• main() function

• Tokens (keywords, identifiers, constants)

Practice

• Simple printf() programs

  3: Data Types & Variables

Learn

• int, float, char, double

• Size of data types

• Variable scope (local/global)

Practice

• Type conversion programs

  4: Operators & Expressions

Learn

• Arithmetic, logical, relational

• Bitwise operators

• Operator precedence

Practice

• Output-based questions

🗓️ PHASE 2: CONTROL FLOW (Day 6–10)

  5: Conditional Statements

Learn

• if, if-else, else-if ladder

• switch-case

Practice

• Grade system

• Calculator program

  6: Looping Statements

Learn

• for, while, do-while

• break, continue

Practice

• Fibonacci

• Prime numbers

• Pattern printing ⭐

🗓️ PHASE 3: FUNCTIONS & ARRAYS (Day 11–15)

  7: Functions

Learn

• Function declaration & definition

• Call by value vs reference

• Recursion

Practice

• Factorial using recursion

  8: Arrays

Learn

• 1D & 2D arrays

• Row-major order

• Passing arrays to functions

Practice

• Matrix addition

• Largest element

  9: Strings

Learn

• String declaration

• String functions (strlen, strcpy, etc.)

• Difference between char array & string literal

Practice

• Reverse string

• Palindrome string

🗓️ PHASE 4: POINTERS (Day 16–20) 🔥 MOST IMPORTANT

  10: Pointers

Learn

• Pointer basics

• Pointer arithmetic

• Pointer to pointer

• Array & pointer relation

Practice

• Swap using pointers

• Array traversal using pointers

  11: Dynamic Memory Allocation

Learn

• malloc, calloc, realloc, free

• Heap vs stack

Practice

• Dynamic array program

🗓️ PHASE 5: USER-DEFINED DATA TYPES (Day 21–24)

  12: Structure

Learn

• Structure declaration

• Structure pointer

• Nested structure

Practice

• Student record system

  13: Union & Enum

Learn

• Structure vs Union

• Enum usage

  14: typedef

Learn

• Creating custom data types

🗓️ PHASE 6: ADVANCED C (Day 25–28)

  15: Storage Classes

Learn

• auto

• static

• extern

• register

  16: Preprocessor

Learn

• #define

• Macros vs functions

• Conditional compilation

  17: File Handling

Learn

• fopen, fclose

• File modes

• fprintf, fscanf

Practice

• File copy program

🗓️ PHASE 7: INTERVIEW & DSA BASICS (Day 29–30)

  18: Memory Layout of C Program

• Stack

• Heap

• Data segment

• Code segment

  19: Error Handling & Debugging

• Compile-time vs run-time errors

• Segmentation fault

• Undefined behavior

  20: C + DSA Basics

• Arrays

• Sorting (Bubble, Selection, Insertion)

• Searching (Linear, Binary)

🎯 DAILY STUDY ROUTINE (IMPORTANT)

🧠 INTERVIEW FOCUS CHECKLIST

✔ Pointer questions
✔ Output-based problems
✔ Memory explanation
✔ Time complexity
✔ Real-life examples