assembl language c++ help

I need help with writing a program, im really frustrated. i am trying to write a program that check a large string for vowels aeiou and AEIOU also i have another part of the assingment that asks me to write a program that searches for 0123456789, have no idea how to search for numbers, and the first part of the assignment i understood and it is working right, i was asked to scan an entire string for periods ".". Can anyone help me here is an example of my code.
your properly formatted assembly language data here

Code:

    char refstr[] = "In 1987 I received my first teddy bear.I took him everywhere with me.There wasn’t a thing me and teddy wouldn’t tell each other.Teddy had 10 buttons, 02 eyes"
                     ", and money wise was priceless to me. It's 2010, what shall I do with this old friend of mine? He now has 03 buttons 01 eye, and no nose!I’ve got it!" 
                     "I will give it a new home. Perhaps you could use a teddy bear?";
     
    
    unsigned short int ans = 0;
    
     __asm {
//  your syntatically correct assembly language code here 
//  column alignment markers below (to guide you)
//      |       |                          |
        cld                                ;
        lea     edi,refstr                 ;
        mov     cx,379                     ;
        mov     al,'a'                     ;
        
more1:
        repne scasb
        cmp     cx,0                       ;
        je      skip1                      ;
        inc     ans                        ;
skip1:
        cmp     cx,0                       ;
        ja      more1                      ;

    }
     cout << "The number of vowels = " << ans;


    return(0);