C++ Exercises: Each element of a given list of integers is multiplied by five

Last update on December 20 2024 12:21:31 (UTC/GMT +8 hours)

Multiply Each Integer in Array by 5

Write a C++ program to create a list from a given list of integers where each element is multiplied by 5.

Test Data:
({ 1, 2, 3}) -> {5, 10, 15}
({2, 4, 7, 8}) -> {10, 20, 35, 40})

Sample Solution:

C++ Code :

#include <bits/stdc++.h>  // Include all standard C++ libraries
#include <list>  // Include the list container

using namespace std;  // Using standard namespace

// Function to create a new list where each element is multiplied by 5
list<int> test(list<int> nums) {
    list<int> new_list;  // Declare a new list to store the multiplied elements
    list<int>::iterator it;  // Declare an iterator for traversing the input list 'nums'

    // Iterate through 'nums' list and multiply each element by 5, then add it to 'new_list'
    for (it = nums.begin(); it != nums.end(); ++it) {
        new_list.push_back(*it * 5);
    }

    return new_list;  // Return the new list with elements multiplied by 5
}

// Function to display the elements of a list
display_list(list<int> g) {
    list<int>::iterator it;  // Declare an iterator for traversing the input list 'g'

    // Iterate through 'g' list and display each element
    for (it = g.begin(); it != g.end(); ++it) {
        cout << *it << ' ';  // Print each element followed by a space
    }
    cout << '\n';  // Move to a new line after displaying all elements
}

int main() {
    list<int> nums = {1, 2, 3, 4, 5, 6, 7, 8, 9};  // Initialize a list 'nums' with integers
    cout << "Original list of elements:\n";
    display_list(nums);  // Display the original list 'nums'

    list<int> result_list;  // Declare a list to store the result of test() function
    result_list = test(nums);  // Call the test() function to multiply each element by 5
    cout << "\nNew list from the said list where each element is multiplied by 5:\n";
    display_list(result_list);  // Display the new list with elements multiplied by 5

    return 0;  // Return 0 to indicate successful completion of the program
}

Sample Output:

Original list of elements:
1 2 3 4 5 6 7 8 9

New list from the said list where each element is multiplied by 5:
5 10 15 20 25 30 35 40 45

Flowchart:

C++ Code Editor:

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