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C++ Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to C++ Framework. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Q 1 - What is the output of the following program?
#include<iostream>
using namespace std;
class abc {
void f();
void g();
int x;
};
main() {
cout<<sizeof(abc)<<endl;
}
Answer : B
Explaination
Only the class member variables constitutes as the size of the class or its object.
#include<iostream>
using namespace std;
class abc {
void f();
void g();
int x;
};
main() {
cout<<sizeof(abc)<<endl;
}
Q 2 - By default the members of the structure are
Answer : C
Explaination
If no access specifiers are specified for structure variables/functions, then the default is considered as public.
Q 3 - Operators sizeof and ?:
Answer : B
Explaination
Both the mentioned operators cannot be overloaded.
Q 4 - How many number of arguments can a destructor of a class receives?
Answer : A
Explaination
The destructor receives no arguments and is only form to be provided. Hence destructor cannot be overloaded.
Q 5 - Which feature of the OOPS gives the concept of reusability?
Answer : C
Explaination
The process of designing a new class (derived) from the existing (base) class to acquire the attributes of the existing is called as inheritance. Inheritance gives the concept of reusability for code/software components.
Q 6 - With respective to streams >> (operator) is called as
Answer : B
Explaination
It extracts the data from stream into variables.
Q 7 - An exception is __
Answer : A
Explaination
When the program is in execution phase the possible unavoidable error is called as an exception.
Answer : D
Explaination
The size of int depends upon the complier i.e. whether it is a 16 bit or 32 bit.
Answer : B
Explaination
bool is the reserved keyword and cannot be used an identifier name.
Q 10 - What is the output of the following program?
#include<iostream>
using namespace std;
main() {
char s[] = "Fine";
*s = 'N';
cout<<s<<endl;
}
Answer : B
Explaination
*s=N, changes the character at base address to N.
#include<iostream>
using namespace std;
main() {
char s[] = "Fine";
*s = 'N';
cout<<s<<endl;
}