The volatile keyword informs the compiler that a variable may change without the compiler knowing it. Variables that are declared as volatile will not be cached by the compiler, and will thus always be read from memory.
The mutable keyword can be used for class member variables. Mutable variables are allowed to change from within const member functions of the class.
Which value we cannot assign to reference? a) integer b) floating c) unsigned d) null
What is output of this program?
#include <iostream>
using namespace std;
int main()
{
int a = 9;
int & aref = a;
a++;
cout << "The value of a is " << aref;
return 0;
}
a) 9
b) 10
c) error
d) 11What is the output of this program?
#include <iostream>
using namespace std;
void swap(int &a, int &b);
int main()
{
int a = 5, b = 10;
swap(a, b);
cout << "In main " << a << b;
return 0;
}
void swap(int &a, int &b)
{
int temp;
temp = a;
a = b;
b = temp;
cout << "In swap " << a << b;
}
a) In swap 105 In main 105
b) In swap 105 In main 510
c) In swap 510 In main 105
d) none of the mentionedIdentify the incorrect statement a) reference is the alternate name of the object b) A reference value once defined can be reassigned c) A reference value once defined cannot be reassigned d) none of the mentioned
What is output of program?
#include <iostream>
using namespace std;
void print (char * a)
{
cout << a << endl;
}
int main ()
{
const char * a = "Hello world";
print(const_cast<char *> (a) );
return 0;
}
a) Hello world
b) Hello
c) world
d) compile time errorCan you please explain what is class using C++?
What is static type varidentifier?
Explain the uses of static class data?
What is static variable?
Explain dynamic type checking?
rendc.org
Whether it is technological solutions or user-oriented innovations, We have put together for you the best sources of HR Interview Questions and Answers, Tech Ideas, and Programming Tutorials."
Get all the latest information on rendc.org
© 2022 | All rights reserved.
RENDC
welcome to www.rendc.org