Introduction to C programming

Question 1

What are the uses of C programming

Answer 1

Used to develop software like:
1. Operating systems
2. Databases
3. Compilers, and so on.

Question 2

What are C keywords?

Answer 2

Keywords are predefined, reserved words used in programming that have special meaning to the compiler.

Question 3

What are identifiers?

Answer 3

Identifiers refers to name given to entities such as variables, functions, structures. They have to be unique.

Question 4

What are variables

Answer 4

A variable is a container(storage area) to hold data

Question 5

What are literals?

Answer 5

Literals are data used for representing fixed values.

Question 6

What are escape sequence

Answer 6

These are characters that cannot be typed or has special meaning in C programming

Question 7

Example of escape sequence

Answer 7

\b - backspace
\f - form feed
\n - newline
\r - return
\t - horizontal tab
\v - vertical tab
\ - backlash
\? question mark

Question 8

What are constants

Answer 8

These are variables whose values cannot be changed after declartion.

Question 9

Mention C data types

Answer 9

char
int
float
double
short int
unsigned int
bool
enumerated type
complex type

Question 10

What is the size and format of int

Answer 10

4,
%d,%i

Question 11

What is the size and format of char

Answer 11

1
%c

Question 12

What is the size and format of float

Answer 12

4
%f

Question 13

What is the size and format of double

Answer 13

8
%lf - bascially long float

Question 14

What is the size and format of short int

Answer 14

2
%hd - half int

Question 15

What is the size and format of unsigned int

Answer 15

4
%u