C Interview Programs

Interview Practice Index

C interview programs are bite-sized tasks that reward careful looping, clean formatting with stdio, and knowing when to pass pointers instead of copying huge structs. Each lesson below mirrors the full tutorial layout—overview, algorithm, complete code, FAQs, and complexity.

Interview Programs in C

Labs and interviews often revisit the same pillars. Expect prompts that touch:

• Core syntax: data types, operators, if/else, loops, functions, and headers such as <stdio.h>.
• Arrays and strings: fixed buffers, sentinel loops, and careful bounds when reading input.
• Pointers: addresses, pointer arithmetic on arrays, double pointers when instructors ask for dynamic arrays.
• Linked structures: structs plus manual linking when you advance past array-only drills.
• Recursion: factorial-style bases, divide-and-conquer, and stack-depth awareness.
• Searching and sorting: nested loops, swaps, and reasoning about comparisons.
• Dynamic memory: malloc, calloc, realloc, free, and pairing every allocation with a release.
• Files: fopen/fclose, line reads, and error checks.
• Problem-solving: stating assumptions, rejecting bad input, and estimating complexity.

Use the cards below like a playlist—finish one topic cluster before jumping into heavier matrix utilities.