Question

E) 120 pts.] Write another function int main ) in C++(and comment the main in Q1.D) that displays the following menu using a do while loop: please choose from the following Menu: I: Populate array with 5 elements 2: Print Array 3: Reverse Array 0: Exit Based, on the user choice, you should call the appropriate function. For example, if the user: - chooses 1, then in function main you should call function populateArray (A, 5); - chooses 2, then in function main you should call function printArray (A, 5); - chooses 3, then function man should call function reverseArray(A, 5);

dont use switch

Answer 1

Code :

#include <iostream>

using namespace std;

void printMenu()
{
    cout << "\n\nplease choose from the following Menu :\n";
    cout << "1. Populate array with 5 elements.\n";
    cout << "2. Print Array.\n";
    cout << "3. Reverse Array.\n";
    cout << "0. Exit\n\n";
    cout << "Enter choice : ";

}

void Swap(int *a, int *b)
{
    int temp = *a;
    *a = *b;
    *b = temp;
}

void populateArray(int * A, int n)
{
    cout << "\nEnter the values of the array : ";
    for(int i = 0; i < n; i ++)
    {
        cin >> A[i];
    }
}

void printArray(int *A, int n)
{
    for(int i = 0; i < n; i++)
    {
        cout << A[i] << " ";
    }
    cout << "\n";
}

void reverseArray(int *A, int n)
{
    for(int i = 0; i < n/2; i++)
    {
        Swap(&A[i], &A[n-1-i]);
    }
}

int main()
{
    int choice;
    int *A = (int *)malloc(5*sizeof(int));
    do
    {
        printMenu();
        cin >> choice;
        if(choice == 1)
        {
            populateArray(A, 5);
        }
        else if(choice == 2)
        {
            printArray(A, 5);
        }
        else if(choice == 3)
        {
            reverseArray(A, 5);
        }
    }while(choice != 0);
    return 0;
}

Output :

******************NOTE******************

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