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106 C And C++ MCQ Questions in english हिन्दी
C and C++ are kinds of middle-level computer languages. Programming in C++, an object-oriented language, offers applications a distinct structure and encourages code reuse, which reduces development costs. Applications that can be converted to different platforms can be created using C++ because it is portable. C++ is closer to the compiler and faster than C language. It is a statically typed programming language i.e it uses static typing when type checking is performed during compile-time as opposed to run time. Learning C++ is enjoyable and simple. C++ is a superset of the C language. Let's do a quiz about C and C++ Languages that will help you to level up your knowledge and prepare for exams.
What are the advantages of using C++ input and output over C input and output?
What will the following C++ code produce?
#include
using namespace std;
int main ()
{
int a, b, c;
a = 2;
b = 7;
c = (a > b) ? a : b;
cout << c;
return 0;
}
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How do structures and classes vary in C++?
What would the following C++ code snippet produce?
#include
using namespace std;
int operate (int a, int b)
{
return (a * b);
}
float operate (float a, float b)
{
return (a / b);
}
int main()
{
int x = 5, y = 2;
float n = 5.0, m = 2.0;
cout << operate(x, y) <<"\t";
cout << operate (n, m);
return 0;
}
Which concept in C++ allows you to reuse previously written code?
What will the following C++ programme produce?
#include
using namespace std;
int main()
{
try
{
try
{
throw 20;
}
catch (int n)
{
cout << "Inner Catch\n";
throw;
}
}
catch (int x)
{
cout << "Outer Catch\n";
}
return 0;
}
Which of the following constructors are provided by the C++ compiler if they are not defined in a class?
What exactly is an abstract class in C++?
What will the C++ programme below produce?
#include
using namespace std;
int main()
{
int n = 5;
void *p = &n;
int *pi = static_cast(p);
cout << *pi << endl;
return 0;
}
What will the result of the following C++ application be?
#include
#include
using namespace std;
int main ()
{
std::string str ("Sanfoundry.");
str.back() = '!';
std::cout << str << endl;
return 0;
}
What exactly is a polymorphism in C++?
What will the following C++ code produce?
#include
using namespace std;
void square (int *x, int *y)
{
*x = (*x) * --(*y);
}
int main ( )
{
int number = 30;
square(&number, &number);
cout << number;
return 0;
}
What will the following C++ programme produce?
#include
using namespace std;
int main()
{
int a = 5;
auto check = [=]()
{
a = 10;
};
check();
cout<<"Value of a: "<
In C++, which of the following symbols is used to declare preprocessor directives?
What will the following C++ code produce?
#include
using namespace std;
int main()
{
int a = 5;
float b;
cout << sizeof(++a + b);
cout << a;
return 0;
}
In C++, what is inheritance?
The C++ code that causes an abnormal programme termination/behavior should be written in the block.
In C++, what is the acceptable syntax for accessing a static member of a class? --------------------------- Example class: class A { public: static int value; } ---------------------------
In C++, which keyword is used to define macros?
What will the result of the following C++ code be?
#include
using namespace std;
int main()
{
char c = 74;
cout << c;
return 0;
}
In C++, which of the following is used to end the function declaration?
What will the result of the following C++ application be?
#include
#include
#include
using namespace std;
int main(int argc, char const *argv[])
{
const char *a = "Hello\0World";
cout<
Which is more efficient when invoking C++ functions?
In C++, what is the purpose of indentation?
What will the following C++ code ?
#include
using namespace std;
int main ()
{
int cin;
cin >> cin;
cout << "cin: " << cin;
return 0;
}
Explanation: cin is a variable hence overrides the cin object. cin >> cin has no meaning so no error.
What does this declaration mean? int x : 4
The result will be if the input is abcdefg.
What does the phrase "printf("%d", (a++)")"
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