C++ program to change every letter in a given string with the letter following it in the alphabet (ie. a becomes b, p becomes q, z becomes a).

  Write a C++ program to change every letter in a given string with the letter following it in the alphabet (ie. a becomes b, p becomes q, z becomes a).

This is my first blog guys .Hope you all'll love this .😇💓Here is my code which I used to write this program :

#include<iostream>

#include<cstring>

using namespace std;

int main()

{

   cout<<" program to change every letter in a given string with the letter \nfollowing it in the alphabet"<<endl;

   cout<<endl;

   char change_letter[100];

   int size;

   cout<<"enter string"<<endl;

   cin.get(change_letter,100);

   size=strlen(change_letter);

   {

    int char_code;

    for(int i=0;i<size;i++)

    {

      char_code=int(change_letter[i]);

if(char_code==122) //value of z

    {

    change_letter[i]=char(97);  //mean z will be replaced by a whose value is a=97

}

    else if(char_code==90)  // value of Z

    {

            change_letter[i]=char(65);   //Z will be replace by A

}

    else if(char_code>=65 && char_code <=90 || char_code >=97 && char_code<=122)

    {

    change_letter[i]=char(char_code+1) ; //1 will be added in value of asc so that it will print next letter

   }

    }

   }

   cout<<"The Changed string is ="<<change_letter;

return 0;

}

And the output of my program is