有如下程序段: Dim str As String * 10 Dim i str1 = "abcdefg" i = 12 len1 = Len(i) sir2 = Right(str1, 4)执行后,len1和str2的返回值分别是( )。
A.12,abcd
B.10,bcde
C.2,defg
D.0,cdef
设有如下程序:Private Sub Form_Click()Dim i As Integer,x As String,Y As Stringx=”ABCDEFG”For i=4 To 1 Step-1y=Mid(x,i,i)+yNext iPrint yEnd Sub程序运行后,单击窗体,输出结果为A.ABCCDEDEFGB.AABBCDEFGC.ABCDEFGD.AABBCCDDEEFFGG
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假定有以下函数过程: Function Fun(S As String) As String Dim sl As String For i=1 To Len(S) s1=UCase (Mid(S,i,1))+s1 Next i Fun=s1 End Function则Str2=Fun("abcdefg”)的输出结果为( )。A.abcdefgB.ABCDEFGC.gfedcbaD.GFEDCBA
阅读以下程序说明和C程序,将应填入(n)处的子句,写在对应栏内。【程序说明】函数int commstr(char * str1,char * str2,int * sublen)从两已知字符串str1和str2中,找出它们的所有最长的公共子串。如果最长公共子串不止1个,函数将把它们全部找出并输出。约定空串不作为公共子串。函数将最长公共子串的长度送入由参数sublen所指的变量中,并返回字符串str1和str2的最长公共子串的个数。如果字符串str1和str2没有公共子串,约定最长公共子串的个数和最长公共子串的长度均为0。【程序】int strlen(char * s){char *t=s;while( * ++);return t-s-1;}int commstr(char) *str1,char *str2,int *sublen{ char*s1, *s2;int count=0,len1 ,len2,k,j,i,p;len1:=strlen(str1)len2 = strlen(str2);if(len1>len2){s1=str1 ;s2=str2;}else {len2 = len1;s1 = str2;s2 = str1;}for(j=len2;j>0;j--) /*从可能最长子串开始寻找*/{for(k=0;(1)<:len2;k++) /*k为子串s2的开始位置*/{for(i=0;s1[(2)]!='\0';i++;) /*i为子串s1的开始位置*/{ /*s1的子串与s2的子串比较*/for (p=0;p<j)&&(3);p++);if ((4)) /*如果两子串相同*/{for(p=0);p<j;p++} /*输出子串*/printf ("%c",s2[k+p]);printf ("\n");count++;/*计数增1 */}}}if (count>0) break;*sublen=(count>0)?(5):0;return count;}
设有如下程序: Private Sub Form. Click( ) Dim i As Integer,x As String,y As String x="ABCDEFG" For i=4 To 1Step-1 y=Mid(X,i,i)+y Next i Print y End Sub 程序运行后,单击窗体,输出结果为( )。A.ABCCDEDEFGB.AABBCDEFGC.ABCDEFGD.AABBCCDDEEFFGG
运行下面程序,其输出结果(str2的值)为【 】。Dim str1,str2 As StringDim i As Integerstrl="abcdef"For i=1 To Len(str1) Step2str2=UCase(Mid(str1,i,1))+str2NextMsgBox str2
假定有以下函数过程: Function Fun(S As String) As String Dim s1 As String For i=1 To Len(S) s1 = UCase(Mid(S, i, 1)) +s1 Next i Fun =s1 End Function 在窗体上画一个命令按钮,然后编写如下事件过程: Private Sub Command1_Click() Dim Str1 As String, Str2 As String Strl = InputBox(“请输入一个字符串”) Str2=Fun(Str1) Print Str2 End Sub 程序运行后,单击命令按钮,如果在输入对话框中输入字符串“abcdefg”,则单击“确定” 按钮后在窗体上的输出结果为,A.abcdefgB.ABCDEFGC.gfedcbaD.GFEDCBA
以下程序段运行后消息框的输出结果为______。s="Access"Dim str As StringFor i=1 To Len(s)str=UCase(Mid(S,I,I))+strNext iMsgBox str