Programming in Modern C++ Week 1 Assignment Answers 2026

Last updated: January 19, 2026

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Programming in Modern C++ Week 1 Assignment Answers (Jan-Apr 2026)

Que.1
Consider the following code segment. What will be the output/error?

a) 1
b) 0
c) -1
d) Compilation Error: bad declaration

View Answer

Que.2
Fill in the blank at LINE-1 so that the program will print “not found”.

a) &array[0], &array[5], key
b) array, array+5, key
c) &array[0], &array[4], key
d) array, array+4, key

View Answer

Que.3
Consider the following code and find the correct output.

a) 3 1 2 4 5 6 7
b) 3 4 1 2 5 6 7
c) 4 1 2 3 5 6 7
d) 1 3 2 4 5 6 7

View Answer

Que.4
Consider the following code segment. What will be the output?

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

View Answer

Que.5
Choose the correct option to fill in the blank at LINE-1 so that the program does not generate any compilation error.

a) A A A B C Z Z Z
b) A A B B C Z Z Z
c) A A A B C Z Z
d) A A A B C Z Z Z

View Answer

Que.6
Consider the following code and choose the correct output.

a) 0
b) 1
c) false
d) true

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Que.7
Fill in the blank at LINE-1 so that the program generates output as CPP is fun.

a) word1 + word2
b) strcat(word1, word2)
c) word1.insert(word2)
d) word1.append(word2)

View Answer

Que.8
Fill in the blank at LINE-1 so that the program generates output as shown.

a) arr + 4 − i
b) arr + 5 − i
c) arr + i − 4
d) arr + i − 5

View Answer

Que.9
Consider the following code segment. What will be the output?

a) 1234987654
b) 123498765
c) 1234897654
d) 123459876

View Answer

(July-Dec 2025)

Question 1. Consider the following code segment.

#include<iostream>
#include<string>
using namespace std;
int main() {
    string greet = "Welcome Back";
    // LINE-1
    cout << greet;
    return 0;
}

Choose the correct option to fill in the blank at LINE-1 so that the output is Welcome.
a) greet.resize(7)
b) greet.shrink_to_fit()
c) greet.copy(“Welcome”, 7, 0)
d) strncpy(greet, “Welcome”, 7)

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Question 2. Consider the following code segment.

#include<iostream>
#include<algorithm>
using namespace std;
bool descending(int i, int j) {
    return (i > j);
}
int main() {
    int arr[] = {8, 3, 5, 9, 6, 7};
    sort(______________); // LINE-1
    for(int i=0; i<6; i++)
        cout << arr[i] <<" ";
    return 0;
}

Choose the correct option to fill in the blank at LINE-1 so that the output is 8 5 3 9 6 7.
a) arr, arr+3, descending
b) &arr[0], &arr[0]+4, descending
c) arr+1, arr+4, descending
d) &arr, &arr+3, descending

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Question 3. Consider the following code and find the correct output.

#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;
int main() {
    vector<int> nums = {10, 20, 30, 40, 50, 60, 70};
    rotate(nums.begin(), nums.begin()+2, nums.begin()+4);
    for(auto i : nums)
        cout << i <<" ";
    return 0;
}

a) 30 10 20 40 50 60 70
b) 30 40 10 20 50 60 70
c) 40 10 20 30 50 60 70
d) 10 30 20 40 50 60 70

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Question 4. Consider the following code and find the correct output or error.

#include<iostream>
#include<stack>
using namespace std;
int main() {
    int arr[5] = {6, 2, 5, 4, 1};
    stack<int> s;
    for(int i=0; i<5; i++) {
        while(!s.empty() && s.top() >= arr[i])
            s.pop();
        if (s.empty())
            cout << -1 <<" ";
        else
            cout << s.top() << " ";
        s.push(arr[i]);
    }
    return 0;
}

a) -1 6 2 2 1
b) -1 -1 6 2 2
c) -1 -1 2 2 -1
d) Compilation Error

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Question 5. Consider the following code segment.

#include<iostream>
using namespace std;
int sumRows(_________) {
    // returns the sum of first row
}
int main() {
    int mat[3][3] = {{1,2,3}, {4,5,6}, {7,8,9}};
    cout << sumRows(mat);
    return 0;
}

Choose the correct option to fill in the blank at LINE-1 so that the program does not generate any compilation error.
a) int mat[10]
b) int mat[][3]
c) int mat[3][]
d) int mat[3][3]

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Question 6. Consider the following code and choose the correct output.

#include<iostream>
using namespace std;
int main() {
    bool x = false, y = true, z = true;
    cout << (x && y | 2);
    return 0;
}

a) 0
b) 1
c) false
d) true

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Question 7. Consider the following code segment.

#include <iostream>
#include <string>
using namespace std;
int main() {
    string word1 = "Good ";
    string word2 = "Morning";
    // LINE-1
    cout << message;
    return 0;
}

Fill in the blank at LINE-1 so that the program generates output as Good Morning.
a) string message = word1 + word2;
b) string message = strcat(word1, word2);
c) string message = word1.insert(word2);
d) string message = word1.append(word2);

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Question 8. Consider the following code segment.

#include <iostream>
#include <algorithm>
int main() {
    int data[] = {5, 10, 15, 20, 25};
    int key = 20;
    if (__________) // LINE-1
        std::cout << "Found";
    else
        std::cout << "Not Found";
    return 0;
}

Fill in the blank at LINE-1 so that the program generates output as Found.
a) binary_search(data, data+3, key)
b) std::binary_search(data, data+5, key)
c) std::binary_search(data, data+3, key)
d) binary_search(data, data+5, key)

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Question 9. Consider the following code and choose the correct output.

#include <iostream>
#include <algorithm>
using namespace std;
int main() {
    int data[] = {2, 3, 3, 4, 5, 5, 6};
    replace(data, data+7, 3, 5);
    for (int i = 0; i < 4; ++i)
        cout << data[i] << " ";
    return 0;
}

a) 2 4 6 5
b) 2 4 6 3
c) 2 5 5 4
d) 2 5 6 6

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(Jan-Apr 2025)

Course Link: Click Here

Que. 1) Consider the following program:

#include <iostream>
#include <stack>
using namespace std;
char str[] = "COMPUTER";
stack<char> s1, s2;
int i;
for (i = 0; i < strlen(str); i++)
    s1.push(str[i]);
while (!s1.empty()) {
    s2.push(s1.top());
    s1.pop();
}
while (!s2.empty()) {
    cout << s2.top();
    s2.pop();
}
return 0;

a) COMPUTER
b) REIUPHDC
c) UTERCOHP
d) CINPRETU

View Answer

Que. 2) Which of the following is a container adapter?
a) stack
b) queue
c) deque
d) priority-queue

View Answer

Que. 3) Consider the following code segment:

#include <iostream>
using namespace std;
int main() {
    char data[] = "2453";
    char key = '5';
    if (binary_search(data, data+5, key)) {
        cout << "found";
    } else {
        cout << "not found";
    }
    return 0;
}

Identify the appropriate option to fill in the blank such that the output is “found.”
a) key
b) data, data+5, key
c) data, key, data+5
d) &key, &data[5]

View Answer

Que. 4) Consider the following code:

#include <iostream>
#include <algorithm>
using namespace std;
void modify(int* arr) {
    rotate(arr, arr+3, arr+2);
    rotate(arr+4, arr+3, arr+5);
}
int main() {
    int arr[5];
    for (int i = 0; i < 5; ++i) {
        cin >> arr[i];
    }
    modify(arr);
    for (int i = 0; i < 5; ++i) {
        cout << arr[i];
    }
    return 0;
}

What will be the output?
a) 1 2 3 4 5
b) 5 4 3 2 1
c) 4 5 1 2 3
d) 1 5 4 3 2

View Answer

Que. 5) Consider the following code segment:

#include <iostream>
#include <vector>
using namespace std;
int main() {
    vector<int> cVec(3, -1);
    for (int i = 0; i < 3; i++) {
        cVec[i] = (i + 1) * 10;
    }
    cVec.resize(3);
    cVec.resize(3, 110);
    for (int i = 0; i < cVec.size(); i++) {
        cout << cVec[i] << " ";
    }
    return 0;
}

What will be the output?
a) 10 20 30 20 40 60
b) -1 -1 -1 10 20 30 20 40 60
c) -1 -1 -1 10 20 30 0 0 0 20 40 60
d) 10 20 30

View Answer

Que. 6) Consider the following code segment:

#include <iostream>
#include <algorithm>
using namespace std;
int main() {
    int iarr[] = {10, 50, 40, 10, 50};
    rotate(iarr, iarr+6, 50);
    for (int i = 0; i < 4; ++i)
        cout << iarr[i] << " ";
    return 0;
}

Fill in the blank such that the output is 40 10 10 50.
a) rotate(iarr, iarr+6, 50)
b) rotate(iarr, iarr+6, iarr[5])
c) rotate(iarr, iarr+6, iarr[4])
d) rotate(iarr, iarr+5, 50)

View Answer

Que. 7) Consider the following code segment:

#include <iostream>
#include <algorithm>
using namespace std;
int main() {
    int idata[] = {1, 2, 3, 4, 5};
    int n = sizeof(idata) / sizeof(idata[0]);
    for (int i = 0; i < n / 2; i++) {
        int temp = idata[i];
        replace(idata, idata + 5, temp, *(idata + n - i - 1));
        replace(idata + i + 1, idata + 5, idata[n - i - 1], temp);
    }
    for (int i = 0; i < 5; ++i) {
        cout << idata[i] << " ";
    }
    return 0;
}

What will be the output?
a) 3 2 1 2 3
b) 1 2 3 4 5
c) 5 4 3 2 1
d) 5 4 3 4 5

View Answer

Que. 8) Consider the following code segment:

#include <iostream>
#include <string>
using namespace std;
int main(void) {
    string str1 = "Modern ";
    string str2 = "C++";
    str1.append(str2);
    cout << str1;
    return 0;
}

What is the appropriate option to fill in the blank at LINE-I, such that the output of the code would be “Modern C++”?
a) str1 + str2
b) strcat(str1, str2)
c) str1.append(str2)
d) str1.insert(str2)

View Answer

Que. 9) Consider the following code segment:

#include <iostream>
#include <algorithm>
using namespace std;
int main() {
    int iArr[] = {40, 50, 10, 30, 20};
    rotate(iArr, iArr+4, iArr+6);
    for (int i = 0; i < 5; i++) {
        cout << iArr[i] << " ";
    }
    return 0;
}

What will be the output?
a) 10 30 40 50 20
b) 50 40 30 20 10
c) 10 20 30 40 50
d) 30 20 10 40 50

View Answer

(Jul-Dec 2024)

Course Link: Click Here

Q1.Consider the following program
Fill in the blank at LINE-1 such that the output is Good Morning.
a) message.resize(12)
b) message.clear()
c) message.replace(0, 12, “Good Morning”)
d) strcpy(message, “Good Morning”)

Answer: a) message.resize(12)

Q2.Consider the following code segment.
Identify the appropriate option(s) to fill in the blank at LINE-1, such that the output is:
2 4 9 8 6 3 1
a) &arr[0], &arr[0] + 3, compare
b) arr, arr + 3, compare
c) &arr[0], &arr[0] + 2, compare
d) arr, arr+ 2, compare

Answer: a) &arr[0], &arr[0] + 3, compare
b) arr, arr + 3, compare