Multiple Choice Question Functions in CPP

(1) Which of the following operator is used as argument separator?

A) Colon :

B) Comma ,

C) Semi colon ;

D) Dot .

Explanation

The arguments in function header and function declaration are separated by comma.

Answer

Easy Normal Difficult

(2) Which of the following combined called function definition?

A) Declaration and Header

B) Declaration and Body

C) Header and Body

D) Declaration and Header

Explanation

Function defination consist of two parts, one is called function header and function body. This is accumulatively called function definition.

Answer

Easy Normal Difficult

(3) Semicolon is placed after function.

A) Declaration

B) Header

C) Body

D) Parameter

Explanation

Function declaration is placed before main function and semi colon is placed after function declaration.

Answer

Easy Normal Difficult

(4) How many type of parameters used in functions?

A) 1

B) 2

C) 3

D) 4

Explanation

There are two types of parameters used in C++. One is call actual and other is called formal parameter. Actual parameters are used in function call and formal parameters are used in function declaration/function header.

Answer

Easy Normal Difficult

(5) How many parts of function defination ?

A) 1

B) 2

C) 3

D) 4

Explanation

There are two parts of function definition which include function header and function body.

Answer

Easy Normal Difficult

(6) Which of the following type is used for returning nothing from function ?

A) void

B) int

C) float

D) nothing

Explanation

Void return type is used as an optional data type when we do not want to return any data value from function.

Answer

Easy Normal Difficult

(7) Which of the following activate the function ?

A) Function Header

B) Function Body

C) Function Declaration

D) Function Call

Explanation

Function call is the statement which is used to execute function. So that this statement is called function activation statement.

Answer

Easy Normal Difficult

(8) Which of the following include return statement ?

A) Function Header

B) Function Body

C) Function Declaration

D) Function Call

Explanation

Return statement is used inside body of the function. Normally this is the last statement in every function.

Answer

Easy Normal Difficult

(9) Which of the following is similar to function declaration ?

A) Function Header

B) Function Defination

C) Function Body

D) None

Explanation

Function header is the the first line of function definition. It is similar to function declaration. But there will no semicolon used after function header.

Answer

Easy Normal Difficult

(10) Which of the following is optional in function declaration ?

A) Parameter Identifiers

B) Function Identifier

C) Semicolon

D) Paramter Types

Explanation

In function declaration there is no need to provide each parameter identifier. But these identifier must be provided in function header while writing function definition.

Answer

Easy Normal Difficult

(11) Fucntion declaration is omitted when function is defined ___________ main() function.

A) Inside

B) Before

C) After

D) Anywhere

Explanation

When a function is defined before main() function then there is no need to provide function signature or declaration.

Answer

Easy Normal Difficult

(12) Standard functions are declared and defined in.

A) Library files

B) Inside program

C) Inside compiler

D) None

Explanation

Standard or built in functions are provided by C++. These functions can be used by including corresponding library file in program.

Answer

Easy Normal Difficult

(13) How many types of functions in C++ ?

A) 1

B) 2

C) 3

D) 4

Explanation

There are two types of functions used in C++. These include user defined and built in functions.

Answer

Easy Normal Difficult

(14) Which of the following is used as output of functions in C++ ?

A) Identifier

B) Return Type

C) Arguments

D) All

Explanation

Function return type is used to return some data value after complete execution of function. This is also referred as function output.

Answer

Easy Normal Difficult

(15) In C++ how many paramters a function can accept

A) One

B) Two

C) Three

D) Multiple

Explanation

A function can accept as many as required parameters. These parameters must provide at the time of function call.

Answer

Easy Normal Difficult

(16) Which of the following is used as identifier to funcntion?

A) Return Type

B) Name

C) Arguments

D) Range

Explanation

A function name is also called its identifier. A function is accessed by its name or identifier.

Answer

Easy Normal Difficult

(17) A function has following no of properties

A) 1

B) 2

C) 3

D) 4

Explanation

A function has three properties which include its name, return type and arguments.

Answer

Easy Normal Difficult

CPP Functions MCQ