C Programming and basic memory.
What are the four segments of memory in C programming?
The four segments are text, data, heap, and stack.
What is the purpose of the data segment in memory allocation?
The data segment stores global and static variables.
What is the heap segment used for in C programs?
The heap segment is used for dynamic memory allocation.
How does the stack segment function during execution of C programs?
The stack segment stores local variables and function call information.
What happens when memory is allocated on the heap?
Memory allocated on the heap remains available until it is explicitly freed, unlike the stack, which is automatically managed.
Why is it important to manage memory properly in the heap segment?
Improper management can lead to memory leaks, where memory that is no longer needed is not released back to the system.
What is the lifetime of the data segment in C?
The data segment's lifetime is the entire duration of the program's execution.
Are variables in the data segment known at compile time?
Yes, global and static variables in the data segment are known at compile time.
What is the lifetime of the heap segment in C?
The heap segment's lifetime extends until the memory is explicitly freed, which can be at any time during the program's execution.
Are variables in the heap segment known at compile time?
No, memory allocation for the heap segment occurs at runtime and is not known at compile time.
What is the lifetime of the stack segment in C?
The stack segment's lifetime is tied to the function's execution; it lasts as long as the function is active.
Are variables in the stack segment known at compile time?
Yes, local variables allocated on the stack are generally known at compile time.
What is the lifetime of the text segment in C?
The text segment's lifetime is the same as the program's execution; it remains throughout.
Are variables in the text segment known at compile time?
Yes, the contents of the text segment, which include the compiled code, are known at compile time.