#include <iostream>
#include <string>
using namespace std;
int charToNum (char c)
{
    return int(c)-97;
}
int main ()
{
    string M="klimov sergei";
    cout<<"Original Message: M="<<M<<endl;
    int L=M.length();
    /*
    //Caesar
    int csrk=3;
    cout<<"Caesar cipher:"<<endl;
    cout<<"Key="<<csrk<<endl;
    for (int i=0;i<L;i++)   {
        if (M[i]>=97 && M[i]<=122)
            cout<<M[i]<<":"<<"C["<<i<<"]="<<charToNum(M[i])<<"+"<<csrk<<"="<<char(97+(charToNum(M[i])+csrk)%26)<<endl;
        else
            cout<<M[i]<<":"<<"C["<<i<<"]="<<M[i]<<endl;
    }
    */
    //Gronsfeld
    string grnk="1984";
    string grnk2=grnk;
    cout<<"Gronsfeld cipher:"<<endl;
    cout<<"Key="<<grnk<<endl;
    for (int i=grnk2.length();i<M.length();i++)
        grnk2[i]=grnk[i%4];
    cout<<"Full length key="<<grnk2<<endl;
 
}

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