include  \masm32\include\masm32rt.inc

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.data

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.code

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start:

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exit

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tong1_n proc n:DWORD

    LOCAL i:DWORD

    LOCAL sum:DWORD

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    mov i, 1    

    mov sum, 0

    batdau:

    mov eax, i

    cmp eax, n

    jle cong

    jg thoat

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    cong:

        mov eax, sum

        add eax, i

        mov sum, eax

        mov eax, i

        add eax, 1

        mov i, eax

        jmp batdau

    thoat:

        print chr$("Tong tu 1 den n la: ")

        print str$(sum)

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    ret

tong1_n  endp

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end start