Basic Syntax of C

Question 1

Ignored by the C compiler

Answer 1

Comment

Question 2

Used to document programs

Answer 2

Comment

Question 3

Improve readability

Answer 3

Comment

Question 4

Syntax for one-line comment
Syntax for multi-line comments

Answer 4

//
/*...*/

Question 5

Lines beginning with # are processed by the

Answer 5

preprocessor before compilation

Question 6

Preprocessor Directive tells the preprocessor to include

Answer 6

<stdio.h>

Question 7

What does the <stdio.h> stand for?

Answer 7

Name of the standard library declaration file for all STandard Input and Output functions

Question 8

Where does every C programs begins execute?

Answer 8

Function main

Question 9

What function must contain in a C program?

Answer 9

main

Question 10

What does void mean?

Answer 10

function main does not receive any information

Question 11

What the function main will perform

Answer 11

Program Statements

Question 12

Syntax of Program Statements

Answer 12

enclosing a block of program statements of the function within {}

Question 13

How can statements terminate

Answer 13

Statements are terminated with a semicolon ;

Question 14

What does the program statement do?

Answer 14

Instructs the computer to perform an action.

Question 15

Syntax for variable declaration

Answer 15

data type variable_list;

Question 16

All variables must be declared with _ before they can be used

Answer 16

name and data type

Question 17

% indicates that

Answer 17

a variable’s value is to be printed, followed by a character representing it’s data type

Question 18

What to use when printing a statement?

Answer 18

printf

Question 19

What to use when scanning user input?

Answer 19

scanf

Question 20

What is f in scanf?

Answer 20

formatted

Question 21

Used to obtain a value from the user

Answer 21

scanf

Question 22

Syntax of scanf

Answer 22

scanf(“%format control string”, &address operator)

Question 23

Symbolic names is also known as

Answer 23

Variable Names

Question 24

assign symbolic names, known as
variable names, for storing program computations and results

Answer 24

Variables

Question 25

Variable names can only start with

Answer 25

letter or underscore

Question 26

Is C case-sensitive?

Answer 26

Yes

Question 27

giving values in variables is called

Answer 27

assignment

Question 28

values are called

Answer 28

constants

Question 29

set name of variable along with the datatype of value that it will store

Answer 29

Declaration

Question 30

assign value to the variable as per its type

Answer 30

Definition

Question 31

Types of data types

Answer 31

Integers, Floating, Character

Question 32

Used for declaring integer variable

Answer 32

Integral Types

Question 33

Integral type keyword

Answer 33

int

Question 34

Character type keyword

Answer 34

char

Question 35

Floating points keyword

Answer 35

float or double

Question 36

Can hold real numbers and values that contain a decimal point

Answer 36

Floating Points

Question 37

Difference between float and double in terms of places

Answer 37

float - 6 decimal places
double - 15 decimal places

Question 38

Difference between float and double in terms of storage

Answer 38

float - 4 byte
double - 8 byte

Question 39

Modifiers of real numbers (floating-point)

Answer 39

float, double, long double

Question 40

Modifiers of whole numbers (integer)

Answer 40

short, int, long

Question 41

Syntax for modifiers/qualifiers

Answer 41

optional_modifier datatype variable_list;

Question 42

integer declaration syntax

Answer 42

int id;

Question 43

Extended ASCII has __ codes

Answer 43

256

Question 44

Alter the meaning of base data types to yield a new data type.

Answer 44

Modifiers/Qualifiers

Question 45

Used to distinguish signed and unsigned integers.

Answer 45

Modifiers/Qualifiers

Question 46

unsigned modifier means

Answer 46

variable cannot hold negative values.

Question 47

signed modifier means

Answer 47

a variable can hold both positive and negative values.

Question 48

size of modifier double

Answer 48

8 bytes

Question 49

size of modifier long

Answer 49

10 bytes