tin hc i cng,dhbkhcmAdministrator
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Dap an no the, dung y kien, hoc thuoc thoi, cau nay hay ra :|
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Tuong tu cau tren, b lan nay thay doi gia tri o dong 5, nen con tro ngung o dong 6
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Cac lenh debug se bo qua lenh khai bao bien Dim, Static, Public Nen con tro dung o dong 4
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Con tro dang o dong 9, ct se chay het function f. Cuoi cung dung o dong 7
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Dung vi hai phan tu cung tam vuc ko the trung ten
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Do dong 6 thuoc Command1_click, nen dung debug step out se thoat khoi ca chuong trinh
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Tuc la khi b thay doi gia tri, chuong trinh se dung. Chi xet gia tri cua b tu dong 10 tro di
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Loi phat hien: Bien d co nhieu hon 1 nghia/ mo ho
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Khi dung Debub step out
Private Sub Command1_Click() MsgBox ("Bat dau chay chuong trinh") Dim a As Integer Dim b As Integer a = 3 b = 4 a = f(a, b) b = f(b, a) End Sub Public Function f(ByVal a As Integer, ByVal b As Integer) As Integer Dim x As Integer a = a + 1 x = a + b b = b + 2 f = a * b End Function
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1.txt
Public Function f() Dim f As Single f = 3.1316 End Function Private Sub Command1_Click() Print f() End Sub
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2.txt
Dim d As Double Private Sub d() d = 3.1416 End Sub Private Sub Command1_Click() Print d End Sub
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Vì form và button là hai phan tu thuoc hai tam vuc khac nhau
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Tuong tu nhu tren Gia su thuoc tinh file attrFile=(0011010) De lam theo yeu cau: ta co the gan truc tiep attrFile=vbReadOnly Ngoai ra ta con co the dung toan tu and (0011010) and (0000010)=(0000010) Cau nay sai dap an ('m')
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Do abcxyz Loop while DK Khi dat DK thi thoat vong lap Suy ra vong lap se tinh 1*3*4*5*6*7*8*9*10 Khi i=10: i=i+1=11, sai dk nen thoat vong lap Vi tich tren thieu phan tu 2 nen ket qua la 10!/2
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Chay bang mat thu nhe i=3: Vo vong lap: i>>4. Thoa dk i=4: VVL: i>>5. Thoa dk i=5: VVL: i>>6. Thoa dk i=6: VVL: i>>7. Thoa dk i=7: VVL: i>>8. Thoa dk i=8: VVL: i>>9. Thoa dk i=9: VVL: i>>10. Thoa dk i=10: VVL: i>>11. Khong thoa dk, thoat vong lap Vay co 8 lan VVL
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Cau nay ko ro rang, minh cung ko biet nua :v Gap cau nay thi cu ma lui sang Nhung minh nghi dap an co ve dung
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vbReadOnly tao mot mask |0|0|0|0|0|1|0| Voi 0 la tat, 1 la bat theo thu tu tu phai qua trai |vbArchive|vbDirectory|vbVolume|vbSystem|vbHidden|vbReadonly|vbNormal| Day 7 bit tren quy dinh thuoc tinh cua file, ham vbReadOnly tra ve mot byte nhi phan ma chi co thuoc tinh vbReadOnly duoc bat len, con lai tat het attrFile la thuoc tinh hien tai cua file, ta chua biet: xxxxxxx (0000010) and (xxxxx1x) =(0000010) Vi voi toan tu and, chi co 1 and 1 = 1. Con lai la 0 het. Nen ta chi quan tam bit thu 6 cua attrFile. Vi file dang thuoc tinh chi doc thi X=1=> attrFile and vbReadOnly = (0000010)=1 Vay a,b,c deu dung
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That day!! Ko tin cu loi Laptop, mo VB ra ma thu =)) Dien hinh la thu tuc Form_load
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Cai nay thi khac Form nhe, ba ma' dat ten gi thi no xai ten do :v
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Ko duoc vi hai phan tu nay khac nhau, cung nam tren cung mot tam vuc( la form) Mo rong them, neu hai phan tu giong nhau ve ban chat( vi du nhu hai command button), thi trung ten duoc, nhung phai danh so 0,1,2,3,...
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