StrCount

#include <iostream>
using namespace std;

int findStrCount(string str)
{
    int count = 0;
    int n = str.size();

    for (int i = 0; i < n - 1; i++)
    {
        if (str[i] + 1 == str[i + 1])
        {
            count++;
            while (str[i] + 1 == str[i + 1])
            {
                i++;
            }
        }
    }
    return count;
}

int main()
{
    string str;
    cin >> str;

    cout << findStrCount(str) << endl;

    return 0;
}