1樓：吾桐語
3個text ，1個list（屬性list：+ - * / ），1個command（ 屬性caption：= ）
private sub command1_click()
select case list1.text
case "+"
text3.text = val(text1.text) + val(text2.text)
case "-"
text3.text = val(text1.text) - val(text2.text)
case "*"
text3.text = val(text1.text) * val(text2.text)
case "/"
if val(text2.text) <> 0 then
text3.text = val(text1.text) / val(text2.text)
else
msgbox "被0除"
text2.text = ""
text2.setfocus
end if
end select
end sub
2樓：匿名使用者
dim x as single, y as single, fh as string
private sub command1_click(index as integer)
dim k as integer
k = command1(index).index
if k <> 10 then
if right(text1.text, 1) = "." then
text1.text = text1.text & k
elseif int(val(text1.text)) = val(text1.text) and right(text1.text, 1) <> "." then
text1.text = val(text1.text) * 10 + k
elseif int(val(text1.text)) <> val(text1.text) and right(text1.text, 1) <> "." then
text1.text = text1.text & k
end if
else
text1.text = text1.text & "."
end if
if fh = "" then
x = val(text1.text)
else
y = val(text1.text)
end if
end sub
private sub command2_click(index as integer)
dim k1 as integer
k1 = command2(index).index
text1.text = ""
if command2(k1).caption = "+" then
fh = "+"
elseif command2(k1).caption = "-" then
fh = "-"
elseif command2(k1).caption = "*" then
fh = "*"
elseif command2(k1).caption = "/" then
fh = "/"
end if
end sub
private sub command3_click()
if x <> 0 and y <> 0 then
if fh = "+" then
text1.text = x + y
elseif fh = "-" then
text1.text = x - y
elseif fh = "*" then
text1.text = x * y
elseif fh = "/" then
if y = 0 then
msgbox "除數不能為0", 16, "錯誤！"
exit sub
end if
text1.text = x / y
end if
x = val(text1.text)
else
msgbox "運算元不足！", 16, "錯誤！"
end if
end sub
private sub command4_click()
text1.text = "": x = 0: y = 0: fh = ""
end sub
private sub form_load()
text1.text = "": x = 0: y = 0: fh = ""
end sub
3樓：
加減乘除不都一樣使用嗎？
加 +減 -
乘 *除 /
4樓：
5樓：貴州遵義發郎中
原始碼挺多的，給你乙個自己下了參考
6樓：橫掃千軍
我也剛學，聽說很容易。
如何用vb做兩位數四則運算器?
7樓：郯沛柔盈詠
很簡單的：視窗放入四個command控制項（caption屬性分別為+、－、x、÷），三個text控制項，再放入三個label控制項（caption屬性分別為：運算元1、運算元2和計算結果），視窗的caption屬性改為「四則運算」
**如下：
private
subcommand1_click()
ifval(text1.text)
+val(text2.text)
<>int(val(text1.text)
+val(text2.text))
then
text3.text
=format(val(text1.text)+val(text2.text),
"0.######")
else
text3.text
=val(text1.text)
+val(text2.text)
endif
endsub
private
subcommand2_click()
ifval(text1.text)
-val(text2.text)
<>int(val(text1.text)
-val(text2.text))
then
text3.text
=format(val(text1.text)-val(text2.text),
"0.######")
else
text3.text
=val(text1.text)
-val(text2.text)
endif
endsub
private
subcommand3_click()
ifval(text1.text)
*val(text2.text)
<>int(val(text1.text)
*val(text2.text))
then
text3.text
=format(val(text1.text)*val(text2.text),
"0.######")
else
text3.text
=val(text1.text)
*val(text2.text)
endif
endsub
private
subcommand4_click()
ifval(text1.text)
/val(text2.text)
<>int(val(text1.text)
/val(text2.text))
then
text3.text
=format(val(text1.text)/val(text2.text),
"0.######")
else
text3.text
=val(text1.text)
/val(text2.text)
endif
endsub
8樓：匿名使用者
option explicit
dim x as integer, y as integer, js as integer, arr, a as string
public cuo as integer, zq as integer, sum as integer, k as string
private sub command1_click()
endend sub
private sub command2_click()
randomize
x = int((9 * rnd) + 1)
y = int((9 * rnd) + 1)
k = arr(int(rnd * 4))
select case k
case "＋"
js = x + y
case "－"
if y > x then a = x: x = y: y = a
js = x - y
case "×"
js = x * y
case else
if y > x then a = x: x = y: y = a
js = x / y
end select
label1.caption = trim(str(x)) & k & trim(str(y)) & "="
text1.text = ""
text1.setfocus
end sub
private sub form_load()
arr = array("＋", "－", "×", "÷")
text2.enabled = false
text3.enabled = false
text4.enabled = false
text5.enabled = false
end sub
private sub text1_keypress(keyascii as integer)
if keyascii = 13 then
if label1.caption <> "" then
sum = sum + 1
if val(text1.text) = js then
zq = zq + 1
picture1.print label1.caption & val(text1.text) & " " & "√"
else
picture1.print label1.caption & val(text1.text) & " " & "×"
cuo = cuo + 1
end if
text2.text = sum
text3.text = zq
text4.text = cuo
text5.text = format(str(zq / sum) * 100, "0.00") & "%"
command2_click
end if
keyascii = 0
end if
end sub
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