String reversal

#include <iostream>
#include <string>

void reverseString(std::string& str) {
    int start = 0;
    int end = str.length() - 1;

    while (start < end) {
        std::swap(str[start], str[end]);
        start++;
        end--;
    }
}

int main() {
    std::string inputString;

    std::cout << "Enter a string: ";
    std::getline(std::cin, inputString);

    reverseString(inputString);

    std::cout << "Reversed string: " << inputString << std::endl;

    return 0;
}

1. Include necessary headers: iostream and string.
2. Define a function reverseString that takes a reference to a string and reverses it in-place.
3. Initialize variables start and end to the beginning and end indices of the string, respectively.
4. Use a while loop to swap characters from the start and end of the string until start is no longer less than end.
5. In the loop, swap the characters at the start and end indices using std::swap.
6. Increment start and decrement end after each swap.
7. In the main function, declare a string variable inputString.
8. Prompt the user to enter a string using std::getline.
9. Call the reverseString function to reverse the entered string.
10. Print the reversed string using std::cout.