C Programming MCQ Question with Answer

C Programming MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

Question No : 15
perror( ) function used to ?

Work same as printf()

prints the error message specified by the compiler

prints the garbage value assigned by the compiler

None of the above

Question No : 16
Bitwise operators can operate upon?

double and chars

floats and doubles

ints and floats

ints and chars

Question No : 17
What is C Tokens?

The smallest individual units of c program

The basic element recognized by the compiler

The largest individual units of program

A & B Both

Question No : 18
What is Keywords?

Keywords have some predefine meanings and these meanings can be changed.

Keywords have some unknown meanings and these meanings cannot be changed.

Keywords have some predefine meanings and these meanings cannot be changed.

None of the above

Question No : 19
If the class name is X, what is the type of its “this” pointer (in a nonstatic, non-const member function)?

const X* const

X* const

Question No : 20
Which classes allow primitive types to be accessed as objects?

Storage

Virtual

Friend

Wrapper

Question No : 21
When is std::bad_alloc exception thrown?

When new operator cannot allocate memory

When alloc function fails

When type requested for new operation is considered bad< thisexception is thrown

When delete operator cannot delete teh allocated (corrupted) object