编制求某字符串中数字字符个数的子程序以及调用它的主程序

以下是汇编语言实现求某字符串中数字字符个数的子程序以及调用它的主程序的代码：

.model small
.stack 100h

.data
    msg db 'Enter a string: $'
    count db 0
    result db 'The number of digits in the string is: $'

.code
main proc
    mov ax, @data
    mov ds, ax

    lea dx, msg
    mov ah, 9
    int 21h

    lea dx, str
    mov ah, 0Ah
    int 21h

    mov si, offset str + 2
    mov cx, [offset str + 1]
    mov bl, 0

    call count_digits

    lea dx, result
    mov ah, 9
    int 21h

    mov dl, count
    add dl, 48
    mov ah, 2
    int 21h

    mov ah, 4ch
    int 21h

count_digits proc
    mov ah, [si]
    cmp ah, 0
    je done

    cmp ah, 48
    jl not_digit

    cmp ah, 57
    jg not_digit

    inc bl

not_digit:
    inc si
    loop count_digits

done:
    mov count, bl
    ret
count_digits endp

str db 20, 0
main endp
end main

以下是Python实现求某字符串中数字字符个数的函数以及调用它的代码：

def count_digits(s):
    count = 0
    for c in s:
        if c.isdigit():
            count += 1
    return count

s = input("Enter a string: ")
result = "The number of digits in the string is: " + str(count_digits(s))
print(result)