Homework Answers

Description: 

A palindrome is a string, which when read in both forward and backward ways is the same. 

Example: lol, pop, radar, madam, etc. 

To check if a string is a palindrome or not, a string needs to be compared with the reverse of  

itself. 

Demonstrate these two functions in a program that performs the following steps: 

1. The user is asked to enter a string. 

2. The program displays the following menu: 

A) Display the reverse of the string 

B) Check the string is palindrome or not 

C) Exit the program 

3. The program performs the operation selected by the user and repeats until the user  

selects E to exit the program. 

Output: 

Enter a string : madam 

Please enter a choice according to menu: 

A) Display the reverse of the string 

B) Check the string is palindrome or not 

C) Exit the program 

Please enter choice: A

The reverse of the string is : madam 

Please enter choice: B 

Madam is palindrome 

Please enter choice: E 

Terminate the program

How to execute this using vector?

#include <iomanip>

#include <iostream>

using namespace std;

int main() {

const int MAXCNT = 10; // Constant

float arr[MAXCNT], x; // Array, temp. variable

float array2[MAXCNT];

int i, cnt; // Index, quantity

cout << "Enter up to 10 numbers \n"

<< "(Quit with a letter):" << endl;

for (i = 0; i < MAXCNT && cin >> x; ++i)

arr[i] = x;

cnt = i;

// copying elements of an array to another

// array2 = arr

for (int index = 0; index < cnt; index++)

array2[index] = arr[index];

cout << "The given numbers:\n" << endl;

for (i = 0; i < cnt; ++i)

cout << setw(10) << arr[i];

cout << endl;

return 0;

}