void main()
{
    int blank_count = 0;
    int char_count = 0;
    int sentence_count = 0;
    char ch;
 
    ifstream iFile("c:\test.txt");
 
    if (! iFile)
    {
        cout << "Error opening input file" << endl;
 
    }
 
    while (iFile.get(ch))
    {
        switch (ch) {
            case ' ':
                blank_count++;
                break;
            case '.':
                sentence_count++;
                break;
            default:
                char_count++;
                break;
        }
    }
 
    cout << "There are " << blank_count << " blanks" << endl;
    cout << "There are " << char_count << " characters" << endl;
    cout << "There are " << sentence_count << " sentences" << endl;
}