C Language Basics - Objective Type Questions with Answers

Questions

26 The && and || operators

A compare two numeric values

B combine two numeric valuesshort hand operator, &

C compare two boolean values

D none of these

Answer: Option [C]

The logical operators in C are &&(Logical AND), ||(Logical OR) and !(Logical NOT). They compare two boolean values.

27 In an assignment statement a=b; which of the following statement is true ?

A The variable a and the variable b are same.

B The value of b is assigned to variable a but if b changes later, it will not effect the value of variable a.

C The value of b is assigned to variable a but if b changes later, it will effect the value of variable a

D The value of variable a is assigned to variable b, and the value of variable b is asssigned to variable a.

Answer: Option [B]

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28 Which of the following is not a valid relational operator?

A *

B ==

C >=

D <=

Answer: Option [A]

29 Which is an incorrect variable name?

A Id_No

B ID_NO

C IdNo

D Id No

Answer: Option [D]

Because there is a blank space in the variable name, which is not permitted in C.

30 Which of the following is responsible for conversion of C programs to machine language ?

A Operating system

B An editor

C A compiler

D An interpreter

Answer: Option [C]