Programming Basics

Question 1

Two types of scoping

Answer 1

Static and Dynamic

Question 2

When a function is called, what operation occurs in stack?

Answer 2

PUSH

Question 3

When a function is over, what operation occurs in stack?

Answer 3

POP

Question 4

Within the same function, are multiple variable of the same name allowed?

Answer 4

NO

Question 5

Where are local variables stored?

Answer 5

Stack

Question 6

Where are global variables stored?

Answer 6

Static area

Question 7

3 parts of main memory

Answer 7

Stack, Heap, Static area

Question 8

To store in heap area , which keyword is used?

Answer 8

malloc

Question 9

Which part of main memory is least in size?

Answer 9

Static area

Question 10

Default value in static area?

Answer 10

0

Question 11

Default value in stack area?

Answer 11

garbage

Question 12

Global variable are allocated memory at which time?

Answer 12

Compile time

Question 13

Static memory allocation allocates memory at?

Answer 13

Compile time

Question 14

Static memory allocation is also known as?

Answer 14

Early Binding

Question 15

In dynamic memory allocation, memory estimated at?

Answer 15

Runtime

Question 16

Static can be mapped to?

Answer 16

Compiler

Question 17

Dynamic can be mapped to?

Answer 17

Processor

Question 18

&

Answer 18

Reference operator

Question 19

*

Answer 19

Dereference operator

Question 20

Local variable memory estimated at?

Answer 20

Runtime

Question 21

Identify error : variable with same name declared twice in the same function

Answer 21

Multiple declaration error

Question 22

Identify error: operation b/w two variable of different type

Answer 22

Type mismatch error

Question 23

Identify error : variable used without declaration

Answer 23

Undeclared variable error

Question 24

Solution of scope problem

Answer 24

Static scoping and Dynamic scoping

Question 25

Who handles static scoping?

Answer 25

Compiler

Question 26

Who handles dynamic scoping?

Answer 26

Processor

Question 27

Static scoping?

Answer 27

If no local, take global

Question 28

Dynamic Scoping?

Answer 28

Go to the prev functions, if variable not found in any function, use global variable’s value

Question 29

Which scoping is more difficult to implement?

Answer 29

Dynamic

Question 30

Default scoping technique?

Answer 30

Static

Question 31

When does static scoping give error?

Answer 31

If variable not present local and also not global then error

Question 32

When does dynamic scoping give error?

Answer 32

If variable is not present in any function and also not global

Question 33

In worst case , dynamic scoping prints what value of variable?

Answer 33

Global value

Question 34

Why indexing of array start from 0?

Answer 34

So that no time is taken in calculating offset value

Question 35

int a=26;

Answer 35

Initialisation

Question 36

int a;

Answer 36

Declaration

Question 37

a=26;

Answer 37

Modification

Question 38

If any value is passed to a function suppose int D(int a, int b) then what happens?

Answer 38

Then function D makes its local copies of a and b and stores the passed value in it.

Question 39

What is the difference b/w initialization, declaration and modification

Answer 39

Initialization and declaration creates memory whereas modification does not