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.model flat, c
 
.data
	s db "123abc4565jk-"
	s_len = $ - s
 
    result db s_len dup(?)
 
.code
 
digits_only proc
	mov esi, offset s
	mov ecx, s_len
	mov edi, offset result
	xor eax, eax
check:
	lodsb
	mov ebx, eax
	sub ebx, '0'
	cmp ebx, 9
	ja next
	stosb
next:
    loop check
    mov byte ptr [edi], 0
    ret
digits_only endp
	end
 

prog.asm:1: error: attempt to define a local label before any non-local labels
prog.asm:1: error: parser: instruction expected
prog.asm:3: error: attempt to define a local label before any non-local labels
prog.asm:5: error: parser: instruction expected
prog.asm:7: error: comma expected after operand 1
prog.asm:11: error: parser: instruction expected
prog.asm:12: error: comma, colon or end of line expected
prog.asm:14: error: comma, colon or end of line expected
prog.asm:25: error: comma, colon or end of line expected
prog.asm:27: error: symbol `digits_only' redefined
prog.asm:27: error: parser: instruction expected

Standard output is empty