huruftonumber

#include <iostream>

void CheckSentence(char a)
{
    if(( a >= 'a' && a<= 'z' ) || ( a >= 'A' && a <= 'Z' ))
    {
        std::cout << tolower(a)-96 << " ";
    }else if(a == ' ')
        std::cout << 0 << " ";
}

int main()
{
    std::string input;
    std::cout << "Input :";
    std::getline(std::cin,input);
    for(int i = 0; i < input.length(); i++)
    {
        CheckSentence(input[i]);
    }

    return 0;
}