7-Day C Programming with DSA Interview Preparation Plan
Your saved questions plus a day-by-day plan. Add questions with Save to → 7-Day Job Prep on any question page.
Day-by-day plan
Day 1C basics
- Revise compilation stages, data types, storage classes and macros
- Practise 10 basic programs like prime, Armstrong, swap and bit counting
- Write short notes on undefined behaviour and integer promotion
- Revise const with pointers and static keyword uses
Day 2Pointers and memory
- Solve pointer output questions and pointer arithmetic exercises
- Write malloc, realloc and free based programs with error checks
- Debug a segfault and a leak using GDB and Valgrind
- Revise stack versus heap and memory layout
Day 3Arrays and strings
- Solve 8 problems using two pointers, sliding window and prefix sums
- Implement strlen, strcpy, strcmp and string reversal yourself
- Practise Kadane's algorithm and array rotation
- Revise buffer overflow and safe string functions
Day 4Structures, files and linked lists
- Revise struct padding, unions, bit fields and file I/O functions
- Code linked list insert, delete, reverse and merge
- Practise cycle detection and finding the middle node
- Write a program that saves structs to a binary file
Day 5Stacks, queues and hashing
- Implement stack, circular queue and a simple hash table
- Solve balanced brackets, next greater element and postfix evaluation
- Revise heaps and priority queues
- Review collision handling and load factor
Day 6Trees, graphs and algorithms
- Code BST insert, traversals, height and LCA
- Implement BFS, DFS and Dijkstra on small graphs
- Write binary search, quicksort and merge sort from memory
- Solve 3 DP problems: Fibonacci, coin change and knapsack
Day 7Mock interview and HR
- Take a timed mock test with two medium coding problems in C
- Practise explaining time and space complexity aloud
- Prepare STAR stories for a bug you fixed and a project you built
- Revise the 30 key points and rest well
Frequently asked questions
Can I prepare for a C Programming with DSA interview in 7 days?
Seven days is enough to revise and sharpen, not to learn from zero. Use the plan to cover each core topic once, practise questions daily and finish with a mock interview.
How do I add questions to the plan?
On any question page choose Save to → 7-Day Job Prep. Saved questions show up at the top of this page.
How many hours a day should I study?
Two to four focused hours a day works for most people: one hour of revision, one to two hours of questions, and the rest on projects or mock answers.
Questions to practise each day
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