Найти сумму первых чисел массива - Assembler

int main()
{
    short int a[N];
    short int sum = 0;
    short int k = 0; printf("k<50\n\n");
    printf("Enter  the  values  of  the  range  0-50:\n");
    printf("k = "); scanf_s("%d", &k);
    int n = N;
    short int res = 0;
    for (int i = 0; i < N; i++)
    {
        a[i] = rand() % 50;
        printf("A[%d]  =  %d\n", i, a[i]);
    }
 
    __asm
    {
            mov cx, k
        prnt :
            mov ax, [a + cx * 10]
            dec cx
            cmp cx, 0
            jnz prnt
            jmp lp                     //возврат к метке
        mit :
            add sum, ax
            cmp cx, 0
            jnz prnt
        lp :
            cmp cx, 0
            jnz prnt
    }
 
    printf("Result  =  %d\n", sum);
 
    system("pause");
 
    return 0;
}