task22:

        push ebp
        mov ebp, esp
        push ebx
        push ecx
        push edx


        mov eax, [ebp+8];value to be search for [eax
        mov ecx, [ebp+12];lenght [ecx
        mov ebx, [ebp+16];array pointer [ebx
        cmp ebx, 0
        je .error
        cmp ecx, 0
        jle .error
    .start:
        sub ecx, 1
        cmp ecx , -1
        je .error

        cmp al, [ebx + ecx]
        je .clean
        jmp .start

    .error:
        mov ecx, -1
        jmp .clean
    .clean:
        mov eax, ecx

        pop edx
        pop ecx
        pop ebx

        mov esp, ebp
        pop ebp
    ret 12