用VFP编写程序

2、clear

?"1到100之内的所有素数："

s=0

for i=2 to 100

x=0

for j=2 to i-1

if i/j=int(i/j)

x=1

endif

endfor

if x=0

??alltrim(str(i))+space(2)

s=s+i

endif

endfor

?"它们的和余郑是：",s

3、clear

?"1到1000之间所有奇数的和:"

s=0

for i=1 to 1000

if mod(i,2)<>0

s=s+i

endif

endfor

?s

4、command1的click代码：

if ALLTRIM(thisform.text1.value)="12345".and.alltrim(thisform.text2.value)="abcd"

messagebox("欢迎进入QQ世界")

else

messagebox("你的用户名或密码是错误的!")

endif

5、1）select * from STUDENT where 入学成绩>500

2)select 学号,姓名,专业信息 from STUDENT where substr(alltrim(姓名),1,2)="李"

3)count for 性别="女" to mm

6、CLEAR

SET UDFPARMS TO REFERENCE &&地址传递

DIME AAA(10)

FOR i= 1 TO 10

input "请输入第"+ALLTRIM(STR(i))+"个数：" to AAA(i)

NEXT

=MySort(AAA,10) &&调用冒泡排序函数.

i=1

?"从大到小排序结果为："

do while i<=10

??AAA(i) &&显竖唯颂示排完序后的数据.

i=i+1

enddo

RETURN

*冒泡排序函数.

*参山吵数: pData: 传入数组, nCount:数组的大小.

function MySort

para pData, nCount

for i=1 to nCount

for j=nCount to i+1 step -1

if pData(j)>pData(j-1)

iTemp = pData[j-1]

pData(j-1) = pData[j]

pData(j) = iTemp

endif

endfor

endfor

endfunc

这三道题我已经上机山厅试过了，正确！

1.

clear

accept "请输入任意一个字符：" to x

do case

case x>="A" and x<="Z"蔽手 or x>="a" and x<="z"

?"您输入的是宏唯嫌英语字母"

case asc(x)>=48 and asc(x)<=57

?"您输入的是数字"

otherwise

?"您输入的是英语字母、数学之外的特殊符号"

endcase

return

2.

clear

set talk off

e=1

m=1

do while .t.

p=1

for i=1 to m

p=p*i

endfor

if 1/p<0.000001

exit

else

e=e+1/p

m=m+1

endif

enddo

?"e=",e

set talk on

return

3.

clear

set talk off

f1=1

f2=1

?f1,f2

for i=3 to 20

f3=f1+f2

??f3

f1=f2

f2=f3

endfor

set talk on

return

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