Option A
Macros are expanded during the preprocessing stage.
A macro can be used inside macro defination,given that particular macro is defined before.
But defining a marco inside an another macro will lead to nesting issuses causing unpredicitible behaviour.
for example:
#define OUTER_MACRO(x) do
int temp; // This line would be inside the outer macro
#define INNER_MACRO(y) y * y // Attempting to define a macro here
temp = INNER_MACRO(x); // This line would also be inside the outer macro
printf("Result: %d\n", temp);
} while (0)
int main() {
OUTER_MACRO(5);
return 0;
}
The INNER_MACRO definition would be encountered during preprocessing while expanding the OUTER_MACRO.
Depending on the compiler, this might lead to an error, unexpected expansion, or incomplete processing
hence,A True.
For next two options:
The address space refers to the set of all valid memory addresses,not necessarily the physical amount of RAM available.
Option B
Overlaying is a memory management technique used to run programs that are larger than the available physical memory (RAM).
Overlaying can't be used to increase the address space(logical) of a computer.
hence,B False.
Option C
we can't accomodate a program that is can't be greater then the address space(logical) of a computer.
hence,C False.
Option D
Interrupt service routines (ISRs) can be written in both high-level languages (HLLs) and assembly language, but there are trade-offs.
hence,D False.
