C Programming PYQ 2026
Duration: 2 min
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This educational video clip analyzes a GATE 2026 Session 2 multiple-choice question on C runtime memory allocation. The core concept focuses on identifying which data structure resides in the heap segment of a program's memory layout. The instructor guides students through distinguishing between compiler-managed regions (Stack, Code) and programmer-managed regions (Heap). Key visual evidence includes a memory layout diagram labeling Stack, Heap, Data, and Code segments. The question asks to identify what is stored in the heap among options involving static variables, local arrays, dynamically allocated arrays via malloc(), and return addresses. The instructor highlights the correct option (C) by drawing a connection between the malloc() function and the heap segment, emphasizing that dynamic allocation requires explicit programmer intervention.
Chapters
0:00 – 1:33 00:00-01:33
The video presents a GATE 26 S2 question asking 'In C runtime environment, which one of the following is stored in heap?'. Visible options include static variables inside functions (A), local integer arrays (B), dynamically allocated arrays using malloc() (C), and return addresses (D). A memory layout diagram displays Stack, Heap, Data, and Code segments. The instructor underlines keywords like 'C runtime environment' and 'heap'. He annotates the diagram to show Stack is managed by the compiler while Heap is managed by programmers. Option (C) is highlighted as correct because malloc() allocates memory in the heap, whereas local arrays and return addresses reside on the stack.
The lesson effectively bridges theoretical memory management concepts with practical exam problem-solving. By visually mapping the malloc() function to the heap segment, the instructor clarifies that dynamic memory allocation is distinct from automatic stack allocation. The distinction between compiler-managed (Stack, Code) and programmer-managed (Heap) memory is central to understanding why static variables inside functions or local arrays do not reside in the heap. This visual approach reinforces the rule that only explicitly allocated memory via functions like malloc() occupies the heap in this context.