Write a program that accepts a c-string input from the user and reverse the cont

Question

Write a program that accepts a c-string input from the user and reverse the contents of the string. Your program should work by using 2 pointers. The "head" pointer should be set to the address of the first character in the string, and the "tail" pointer should be set to the address of the last character in the string (i.e., the character before the terminating null). The program should swap the characters referenced by these pointers, increment "head" to point to the next character, decrement "tail" to point to the second-to-last character and so on, until all characters have been swapped and the entire string reversed.

For example:

Hello there my friend

string reversed: dneirf ym ereht olleH

Explanation / Answer

#include<iostream>
#include<string>
using namespace std;
char *revrse( char * str1, char *head,char *tail);
int main(){

    string str;
    cout<<"enter the string ";
    getline(cin,str);
    int sze=str.size();
    char *str1=new char[sze+1];
    str1[sze]='';
    str.copy(str1,sze);
    char *head,*tail;
    head =str1;
    tail =str1+(sze-1);
    str1=revrse(str1,head,tail);
    cout<<str1;
    return 0;
}

char *revrse( char * str1, char *head,char *tail){
    char *head1=head;
    while(head<=tail){
        char temp=*head;
        *head=*tail;
        *tail=temp;
        head++;
        tail--;
    }
    return head1;
}

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