String Reversing without using Predefined Function in C++

This is a C++ program that demonstrates how to reverse a string using the std::swap function. The program works as follows:

The input string str is defined and initialized with the value "TutorJoes".
The length of the string n is calculated using the length method.
A for loop is used to iterate over the first half of the string (up to the n/2-th character).
For each character in the first half of the string, the swap function is used to exchange it with the corresponding character in the second half of the string (i.e., the n-i-1-th character).
After the loop completes, the resulting value of the string is printed to the console using the cout object.
The program exits with a return value of 0.

Overall, this program demonstrates how to reverse a string in C++ by iterating over the first half of the string and swapping each character with its corresponding character in the second half of the string.

Source Code

#include<iostream>
#include<string.h>
using namespace std;
int main()
{
    int i,n;
    string str = "TutorJoes";
    n=str.length();
    for (i=0;i<n/2;i++)
    {
        swap(str[i],str[n-i-1]);
    }
    cout<<"\nAfter reversing string"<<str;
    return 0;
}

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Output

After reversing string seoJrotuT

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