C++ | WarmConnect

Welcome to your C++ test. Please take this test in one sitting of 25 minutes. You can go back and forth answering questions in any order. Your time begins when you fill in your details below and click on next. Submit the test when the time is up

Name

Phone

What does the following statement mean?

int (*fp)(char*)

pointer to a pointer

pointer to an array of chars

pointer to function taking a char* argument and returns an int

function taking a char* argument and returning a pointer to int

What will be the output of the following C++ code?

#include 
    #include
    using namespace std;
    int array1[] = {1200, 200, 2300, 1230, 1543};
    int array2[] = {12, 14, 16, 18, 20};
    int temp, result = 0;
    int main()
    {
        for (temp = 0; temp < 5; temp++) 
        {
            result += array1[temp];
        }
        for (temp = 0; temp < 4; temp++)
        {
            result += array2[temp];
        }
        cout << result;
        return 0;
    }

6553

6533

6522

12200

What is the other name used for functions inside a class?

Member variables

Member functions

Class functions

Class variables

What will be the output of the following C++ code?

#include 
    using namespace std;
    int main()
    {
        char arr[20];
        int i;
        for(i = 0; i < 10; i++)
            *(arr + i) = 65 + i;
        *(arr + i) = '\0';
        cout << arr;
        return(0);
    }

ABCDEFGHIJ

AAAAAAAAAA

JJJJJJJJ

AAAAAAJJJJ

What will be the output of the following C++ code?

#include 
    using namespace std;
    int max(int a, int b )
    {
        return ( a > b ? a : b );
    }
    int main()
    {
        int i = 5;
        int j = 7;
        cout << max(i, j );
        return 0;
    }

either 5 or 7

Which function is used to read a single character from the console in C++?

cin.get(ch)

getline(ch)

read(ch)

scanf(ch)

What are the advantages of passing arguments by reference?

Changes to parameter values within the function also affect the original arguments

There is need to copy parameter values (i.e. less memory used)

There is no need to call constructors for parameters (i.e. faster)

All of the mentioned

Which of the following operator is used with this pointer to access members of a class?

What will be the output of the following C++ code?

    #include 
    using namespace std;
    int main()
    {
        int a = 5, b = 10, c = 15;
        int *arr[ ] = {&a, &b, &c};
        cout << arr[1];
        return 0;
    }

it will return some random number

Which of the following C++ code will give error on compilation?

================code 1================= 
#include  
using namespace std; 
int main(int argc, char const *argv[]) 
{ 
cout<<"Hello World"; 
return 0; 
} 
======================================== 
================code 2================= 
#include  
int main(int argc, char const *argv[]) 
{ 
std::cout<<"Hello World"; 
return 0; 
}

Both code 1 and code 2

Neither code 1 nor code 2

Code 2 only

Code 1 only

What will be the output of the following C++ code?

#include 
    using namespace std;
    int main()
    {
        char *ptr;
        char Str[] = "abcdefg";
        ptr = Str;
        ptr += 5;
        cout << ptr;
        return 0;
    }

cdef

defg

abcd

What will happen in the following C++ code snippet?

int a = 100, b = 200;
int *p = &a, *q = &b;
p = q;

b is assigned to a

p now points to b

a is assigned to b

q now points to a

What are mandatory parts in the function declaration?

return type, function name

return type, function name, parameters

parameters, function name

parameters, variables

Wrapping data and its related functionality into a single entity is known as _____________

Abstraction

Encapsulation

Polymorphism

Modularity

What will be the output of the following C++ code?

#include 
    using namespace std;
    int add(int a, int b);
    int main()
    {
        int i = 5, j = 6;
        cout << add(i, j) << endl;
        return 0;
    }
    int add(int a, int b )
    {
        int sum = a + b;
        a = 7;
        return a + b;
    }

compile time error

When will we use the function overloading?

same function name but different number of arguments

different function name but same number of arguments

same function name but same number of arguments

different function name but different number of arguments

Which of the following permits function overloading on c++?

type

number of arguments

type & number of arguments

number of objects

What will be the output of the following C++ code?

#include 
    using namespace std;
    long factorial (long a)
    {
        if (a > 1)
            return (a * factorial (a + 1));
        else
            return (1);
    }
    int main ()
    {
        long num = 3;
        cout << num << "! = " << factorial ( num );
        return 0;
    }

segmentation fault

compile time error

Out of the following, which is not a member of the class?

Static function

Friend function

Constant function

Virtual function

What is the index number of the last element of an array with 9 elements?

Programmer-defined

How many minimum number of functions should be present in a C++ program for its execution?

What is std in C++?

std is a standard header file in C++

std is a standard namespace in C++

std is a standard class in C++

std is a standard file reading header in C++

Which is more effective while calling the functions?

call by value

call by reference

call by pointer

call by object

Which of the following feature is used in function overloading and function with default argument?

Encapsulation

Polymorphism

Abstraction

Modularity

Which of the following escape sequence represents tab?

\t\r

1 out of 25