{"id":170,"date":"2020-04-03T09:26:01","date_gmt":"2020-04-03T09:26:01","guid":{"rendered":"https:\/\/temp.ashkerala.com\/?p=170"},"modified":"2020-04-03T09:26:01","modified_gmt":"2020-04-03T09:26:01","slug":"c-mcq-13","status":"publish","type":"post","link":"https:\/\/temp.ashkerala.com\/?p=170","title":{"rendered":"C++ MCQ-13"},"content":{"rendered":"

Q.46\u00a0\u00a0 Given a class named Book, which of the following is not a valid constructor? \u00a0<\/strong>
(A)\u00a0 Book ( ) { }\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0 (B)\u00a0 Book ( Book b) { }
(C)\u00a0 Book ( Book &b) { }\u00a0\u00a0 (D)\u00a0 Book (char* author, char* title) { }
\u00a0 \u00a0
\u00a0 Ans:B
\u00a0
Q47\u00a0 Which of the statements is true in a protected derivation of a derived class from a base class?<\/strong>
(A)\u00a0 Private members of the base class become protected members of the derived class \u00a0
(B) Protected members of the base class become public members of the derived class
(C) Public members of the base class become protected members of the derived class \u00a0
(D) Protected derivation does not affect private and protected members of the derived class.
\u00a0
\u00a0 Ans:C
\u00a0
Q48\u00a0 Which of the following statements is NOT valid about operator overloading? \u00a0<\/strong>
(A)\u00a0 Only existing operators can be overloaded.\u00a0 \u00a0
(B)\u00a0 Overloaded operator must have at least one operand of its class type.
(C)\u00a0 The overloaded operators follow the syntax rules of the original operator.
(D)\u00a0 none of the above. \u00a0
\u00a0
\u00a0\u00a0 Ans:D
\u00a0
Q.49\u00a0 Exception handling is targeted at \u00a0<\/strong>
(A) Run-time error\u00a0 (B) Compile time error
(C) Logical error\u00a0 (D) All of the above.
\u00a0 \u00a0
\u00a0 Ans:A
\u00a0
Q.50\u00a0\u00a0 A pointer to the base class can hold address of <\/strong>\u00a0
(A) only base class object\u00a0 \u00a0
(B) only derived class object
(C) base class object as well as derived class object \u00a0
(D) None of the above<\/p>\n

\u00a0Ans:C
\u00a0
Q.51\u00a0\u00a0 Function templates can accept<\/strong>
(A)\u00a0 any type of parameters\u00a0 \u00a0
(B)\u00a0 only one parameter
(C)\u00a0 only parameters of the basic type
(D)\u00a0 only parameters of the derived type
\u00a0
\u00a0 Ans:C
\u00a0
Q.52\u00a0\u00a0 How many constructors can a class have?<\/strong>
(A)\u00a0 0\u00a0 (B)\u00a0 1
(C)\u00a0 2\u00a0 (D)\u00a0 any number \u00a0
\u00a0
\u00a0 Ans:D
\u00a0
Q.53\u00a0\u00a0 The new operator\u00a0<\/strong>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0
(A)\u00a0\u00a0 returns a pointer to the variable \u00a0
(B)\u00a0\u00a0 creates a variable called new
(C)\u00a0 obtains memory for a new variable\u00a0 \u00a0
(D)\u00a0 tells how much memory is available
\u00a0 \u00a0
\u00a0 Ans:C
\u00a0
Q.54\u00a0 Consider the following statements:<\/strong>
\u00a0\u00a0 int x = 22,y=15;
\u00a0\u00a0 x = (x>y) ? (x+y) : (x-y); \u00a0
\u00a0\u00a0 What will be the value of x after executing these statements?<\/strong>
(A)\u00a0\u00a0 22\u00a0 (B)\u00a0 37
(C)\u00a0\u00a0 7\u00a0\u00a0 (D)\u00a0 Error. Cannot be executed
\u00a0 \u00a0
\u00a0 Ans:B
\u00a0
Q.55\u00a0 An exception is caused by<\/strong>
(A)\u00a0 a hardware problem\u00a0 (B) a problem in the operating system
(C)\u00a0 a syntax error\u00a0\u00a0\u00a0\u00a0\u00a0 (D)\u00a0 a run-time error
\u00a0
\u00a0 Ans:D \u00a0
\u00a0
Q.56\u00a0 A template class<\/strong>
(A)\u00a0 is designed to be stored in different containers\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0
(B) works with different data types
(C)\u00a0 generates objects which must be identical\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0
(D)\u00a0 generates classes with different numbers of member functions.
\u00a0
\u00a0\u00a0 Ans:B<\/strong><\/p>\n

Q.57\u00a0 Which of the following is the valid class declaration header for the derived class d with base<\/strong>
classes b1 and b2?
(A)\u00a0 class d : public b1, public b2 (B)\u00a0 class d : class b1, class b2
(C)\u00a0 class d : public b1, b2\u00a0 (D)\u00a0 class d : b1, b2
\u00a0
\u00a0\u00a0 Ans:A
\u00a0
Q.58\u00a0 A library function exit() causes an exit from \u00a0<\/strong>
(A)\u00a0 the loop in which it occurs\u00a0 (B)\u00a0 the block in which it occurs
(C)\u00a0 the function in which it occurs\u00a0 (D)\u00a0 the program in which it occurs \u00a0
\u00a0
\u00a0 Ans:D
\u00a0
Q.59\u00a0 RunTime polymorphism is achieved by ___________<\/strong>
(A) friend function\u00a0 (B) virtual function
(C) operator overloading\u00a0 (D) function overloading
\u00a0
\u00a0 Ans:B
\u00a0
Q.60 Declaration of a pointer reserves memory space <\/strong>\u00a0
(A)\u00a0 for the object.
(B)\u00a0 for the pointer.
(C)\u00a0 both for the object and the pointer.
(D)\u00a0 none of these.
\u00a0<\/p>\n

\u00a0\u00a0 Ans:B<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Q.46\u00a0\u00a0 Given a class named Book, which of the following is not a valid constructor? \u00a0 (A)\u00a0 Book ( ) { }\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0 (B)\u00a0 Book ( Book b) { } (C)\u00a0 Book ( Book &b) { }\u00a0\u00a0 (D)\u00a0 Book (char* author, char* title) { } \u00a0 \u00a0 \u00a0 Ans:B \u00a0 Q47\u00a0 Which…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[15],"tags":[],"class_list":["post-170","post","type-post","status-publish","format-standard","hentry","category-c-and-c-programming-language"],"_links":{"self":[{"href":"https:\/\/temp.ashkerala.com\/index.php?rest_route=\/wp\/v2\/posts\/170","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/temp.ashkerala.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/temp.ashkerala.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/temp.ashkerala.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/temp.ashkerala.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=170"}],"version-history":[{"count":0,"href":"https:\/\/temp.ashkerala.com\/index.php?rest_route=\/wp\/v2\/posts\/170\/revisions"}],"wp:attachment":[{"href":"https:\/\/temp.ashkerala.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=170"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/temp.ashkerala.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=170"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/temp.ashkerala.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=170"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}