C Programming - MCQ Practice Questions

C questions in placement tests and university exams are rarely about syntax alone. Most of what you will find here is output prediction, pointer arithmetic, arrays and strings, structures and unions, storage classes, recursion, and file handling. The explanations walk through memory behaviour step by step, which is usually where the confusion sits rather than in the code itself.

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All topics Basics & Syntax Data Types & Variables Control Flow Functions Arrays & Strings Pointers Structures & Unions File Handling Dynamic Memory Preprocessor

Q.21Hard

In a program that processes binary files with variable-length records, what could cause fread() to return fewer items than requested without reaching EOF?