if, else and Input Validation in C: C Learning Guide, Part 3

Part 3 of TechVani's free C Learning Guide is live: if, else and input validation in C.

This part covers writing decisions in C the way exams and real programs need them: if / else if / else structure, the classic = vs == mistake in conditions, validating user input instead of trusting it, and small tested programs you can run and modify.

Every code sample in the guide is actually compiled and run, with the checked output shown beside it - no invented results.

Read the full part (free): https://techvaniai.blogspot.com/2026/10/if-else-input-validation-c-guide.html

Earlier parts:

• Part 1: From a Problem to a C Program - https://techvaniai.blogspot.com/2026/10/from-problem-to-c-program-c-learning.html
• Part 2: Variables, Data Types and printf scanf - https://techvaniai.blogspot.com/2026/10/variables-types-input-output-c-guide.html