循環(huán)語(yǔ)句_百度文庫(kù)

1、實(shí)驗(yàn)實(shí)驗(yàn)教室實(shí)驗(yàn)名稱：循環(huán)語(yǔ)句實(shí)驗(yàn)?zāi)康模簩?shí)驗(yàn)內(nèi)容及步驟操作1：?jiǎn)窝h(huán)練習(xí)Private Sub Command2_Click(S = 0I = 1Do While I <= 10S = S + II = I + 1LoopPrint SEnd SubPrivate Sub Command3_Click(S = 0I = IDoS = S + II = I + 1Loop Until I > 10Print SEnd SubPrivate Sub Command1_Click(S = 0For I = 1 To 10S = S + INext IPrint SEnd Sub 操作2。

2、雙循環(huán)練習(xí)思考:1.FOR與DO WHILE循環(huán)結(jié)果的異同點(diǎn)何在?2. DO WHILE與 LOOP UNTIL 的不同點(diǎn)何在?3.什么循環(huán)是活循環(huán)? 什么循環(huán)是死循環(huán)? 什么情況下不進(jìn)入循環(huán)?For I = 1 To 4Print Space(10;For J = 1 To 4If J = I ThenPrint "1"ElsePrint "O"End IfNext JPrintNext IFor I = 1 To 5For J = 1 To IPrint "*"Next JPrintNext I For I = 1 To 5Pri

3、nt Space(11 - I;For J = 1 To 2 * I - 1Print "*"Next JPrintNext I打印乘法表For i = 1 To 9For j = 1 To iPrint i * j;Next jPrintNext I-For i = 1 To 9For j = 1 To 9Print i * j;Next jPrintNext i Form1.ClsGOTO句的用法Dim M%, T As IntegerT = 1M = InputBox("請(qǐng)輸入一個(gè)整數(shù)"For i = 2 To M - 1If Val(M Mod

4、i = 0 ThenT = 0GoTo AAAEnd IfNext iAAA:If T = 1 ThenForm1.Print Str(M + "是素?cái)?shù)"End IfIf T = 0 ThenForm1.Print Str(M + "不是素?cái)?shù)"End If 思考:1. 判斷一個(gè)數(shù)是否是素?cái)?shù)的依據(jù)是什么?2. GOTO AAA在程序的作用?3. T變量在程序的作用是什么?4顯示句Form1.Print Str(M + "是素?cái)?shù)"中STR(函數(shù)的用法EXIT的用法:語(yǔ)句格式: EXIT FOR , EXIT DO , EXIT FUNCTION代表語(yǔ)義產(chǎn)生任意10到20之間整數(shù)相加,其和超過(guò)500時(shí),停止累加,顯示其累加結(jié)果Dim S%, M As IntegerS = 0T = TrueDo While TM = Int(Rnd( * 11 + 10S = S + MIf S >= 500 ThenExit Do