1. Consider the code segment given below.
#include <iostream>
#include<cmath>
int main() {
int n = 4;
_________ //LINE-1
return 0;
}

Fill in the blank at LINE-1 such that the output is 16 2.
a) std:: cout << std::pow(n, 2) <‹ ” ” <‹ std: :sqrt (n)
b) cout <‹ pow(n,2) <‹ ” ” <‹ sqrt (n)
c) std:: cout << std::pow(n) « ” ” << std: :sqrt (n)
d) cout << pow(n) << ” ” << sqrt (n)

Answer :- a) std::cout << std::pow(n, 2) << " " << std::sqrt(n)

The code segment uses the functions from the <cmath> library to calculate the square and square root of the variable "n" and then prints the results using std::cout. The pow() function calculates the power (in this case, the square) of a number, and the sqrt() function calculates the square root of a number. The output will be "16 2" for n = 4, indicating the square of 4 is 16, and the square root of 4 is 2.

2. Consider the code segment given below.

#include <iostream>
#include‹vector>
using namespace std;
int main(){
___________; //LINE-1

arr.resize (10);
for (int i=0;i<10;i++)
arr [i] = i+1;
return 0;
}

Fill in the blank at LINE-1 such that the program will run successfully.

a) vector<int> arr
b) vector<int> arr (3)
c) vector<int> arr [3]
d) int arr [3]

Answer :- a) vector<int> arr

The code segment is using vectors from the <vector> library. In order to use a vector named "arr," it needs to be declared with the correct syntax, which is "vector<int> arr;".

3. Consider the following code segment.

#include ‹iostream>
#include<cstring>
using namespace std;

int main() {
string S = S “programming in modern C++”;
cout << s. size() ; //LINE-1
cout << strlen(s); //LINE-2
cout << s. length(); //LINE-3
cout << strlen(s.c_str()); //LINE-4
return 0;
}

Which line/ will give compilation error/s?

a) LINE-1
b) LINE-2
c) LINE-3
d) LINE-4

Answer :- b) LINE-2

In the given code segment, there is a compilation error on LINE-2.

The reason is that "s" is declared as "S" in lowercase, but it should be "S" in uppercase to match the declaration of the string variable "S" on LINE-5. Also, on LINE-1, there is a typo in the assignment statement, it should be "S = "programming in modern C++";" instead of "string S = S "programming in modern C++";".

4. Consider the code segment given below.

#include <iostream>
#include <algorithm>
using namespace std;
int main () {
int data[] = {50, 30, 40, 10, 20};
sort (&data [2], &data [5]);
for (int i = 0; i < 5; i++)
cout <‹ data[i] << “
return 0;
}

What will be the output?

a) 10 20 30 40 50
b) 10 30 40 50 20
c) 50 30 10 20 40
d) 50 10 20 30 40

Answer :- c) 50 30 10 20 40

In the given code segment, the "sort" function is used to sort elements of the array "data" starting from the element at index 2 (data[2]) up to the element before index 5 (data[4]). The sort function arranges these elements in ascending order, which results in the output:

5. Consider the code segment given below.
#include <iostream>
#include <string>
using namespace std;
int main(void) {
string stri = “Welcome “;
string str2 = “students”;
_________ //LINE-1
cout << stri;
return 0;
}

Choose the appropriate option to fill in the blank at LINE-1, such that the output of the code would be: Welcome students.

a) stri += str2
b) strcat (stri, str2)
c) str1. append(str2)
d) str1.insert (str2)

Answer :- a) stri += str2

The code snippet provided aims to concatenate the strings "stri" and "str2" to produce the output "Welcome students." The operator "+=" is used for string concatenation in C++.

6. Consider the code segment given below.

Answer :- b) CORETUPM

7. Consider the Code segment below.

Answer :- b) 0 2 6 8 4

8. Consider the code segment given below.
#include ‹iostream>
#include <algorithm>
using namespace std;
int main () {
int iarr [] = {10, 20, 50, 40, 10, 50};
rotate(&iarr [0], &iarr[2], &iarr [6]) ;
remove (&iarr[0], &iarr [6], 10); //LINE–1
for (int i = 0; i < 4; ++i) cout << iarr [i] << ” “;
return 0;
}

What will be the output?

a) 40 10 10 20
b) 50 40 50 20
C) 50 50 40 20
d) 40 10 40 20

Answer :- C) 50 40 50 20

9. Consider the code segment given below.
#include<iostream>
#include<algorithm>
#include<string.h>
using namespace std;
bool compare (char c1, char c2){
return tolower (c1) > tolower(c2); //LINE-1
}
int main() {
char arr1[20] “C++ Program”, arr2[20] = “C Program”;
cout << lexicographical_compare (arr1, arr1+strlen(arr1), arr2, arr2+5, compare) ;
return 0;
}

What will be the output?

a) 1
b) 0
c) -1
d) Compilation Error: function is not defined

Answer :- a) 1

The ranges are compared up to the first 5 characters of arr1 and arr2. Since "C++" is lexicographically greater than "C Pro" (comparing case-insensitively), the output of the lexicographical_compare function will be true, which is represented as 1.