characters and strings

#include<bits/stdc++.h>
using namespace std;
int main()
{
        string s;
        cin>>s;
        s+="x"; //add x in string

        for(int i=0;i<s.size();i++){
        cout<<s[i]-'a'<<" "; //prints value equal to  their ascii-97;
                                // s[i] s like 'a','b';
                                //if u r using 's[i]' the in realiy u r using ''s[i]'' ....because s[i]='a';
        cout<<int(s[i]-'a');

        if((s[i]-'a')>=0)      //u can also use int(s[i]-'a');
                printf("neeraj ");
        }
        cout << int('a'); // prints value =97;
        char a='p';
        cout<<('p'-'a')<<" ";  //prints asciii value of 'p'- ascii value of 'a';
        cout<<'z'-a<<" ";       // print ascii value of 'z' - ascii value of 'p';
      if(a>0)
                printf("%d neeraj",a);
                cout<<a<<" ";  //print p;
                cout<<'a'<<" ";  //print a;
                cout<<int(a)<<" ";  //prints ascii value of p;
                cout<<int('a')<<" ";  //prints ascii value of a;





                return 0;
}