syntax-error

问题 I keep getting an error when I attempt to insert values into a Access database. The error is syntactic, which leads to the following exception: OleDbException was unhandled Syntax error in INSERT INTO statement. private OleDbConnection myCon; public Form1() { InitializeComponent(); myCon = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0; Data Source=C:\File.mdb"); } private void insertuser_Click(object sender, EventArgs e) { OleDbCommand cmd = new OleDbCommand(); myCon.Open(); cmd

问题 I just bought a Kobo eReader which forces me to register at their website before the eReader functions. Seeing that I'm quite a privacy fundamentalist I refuse to register to read a couple books, so I went searching for an alternative. This brought me to this blogpost, which suggests to open the SQLite DB on the eReader and manually inserting a user with the following insert (formatted for readability): INSERT INTO user ( UserID ,UserKey ,UserDisplayName ,UserEmail ,___DeviceID

问题 I just bought a Kobo eReader which forces me to register at their website before the eReader functions. Seeing that I'm quite a privacy fundamentalist I refuse to register to read a couple books, so I went searching for an alternative. This brought me to this blogpost, which suggests to open the SQLite DB on the eReader and manually inserting a user with the following insert (formatted for readability): INSERT INTO user ( UserID ,UserKey ,UserDisplayName ,UserEmail ,___DeviceID

问题 Why am I getting an "invalid method declaration; return type required" error on check(values); ? public class Swap { int[] values = {5, 6, 7, 8, 9}; check(values); public void swapAdjacentElemnts(int[] values) { for(int i=0; i<values.length - 1; i+=2) { int tempInt = values[i]; values[i] = values[i+1]; values[i+1]=tempInt; } } public int[] check(int[] values) { swapAdjacentElements(values); return values; } } 回答1: You are attempting to execute code outside of a method. Your call to check has

问题 I am trying to create a module for carry select adder in verilog. Everything works fine except the following portion where it is causing compilation error. module csa(a,b,s,cout); input[15:0] a,b; output [15:0] s; output cout; wire zero_c1, zero_c2,zero_c3,zero_c4,zero_c5; wire one_c1, one_c2,one_c3,one_c4,one_c5; wire temp_c1,temp_c2,temp_c3,temp_c4,temp_c5; wire [15:0] s_zero, s_one; initial begin fork fa(s[0], temp_c1,a[0],b[0],0); fa_one(s_zero[1],s_one[1],zero_c1,one_c1,a[1],b[1]); fa

问题 I am getting this error when I enter the String "s" after entring an integer. Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 0 at java.lang.String.charAt(Unknown Source) at oneB.change(oneB.java:4) at oneB.main(oneB.java:26) Following is the code: (Please note that the code is still complete and I have entered some print statements for checking) import java.util.Scanner; public class oneB { public static String change(int n, String s, String t

问题 I've the following line which works fine: while getopts :t t; do case $t in t) echo $t; break; esac; done however when I'm trying to use it as command substitution, the bash fails with error. Code: #!/usr/bin/env bash echo $BASH_VERSION [ "$(while getopts :t t; do case $t in t) echo $t; break; esac; done)" = "t" ] && echo "Option specified." Result: $ ./test.sh -a -b -c -t 4.3.42(1)-release ./test.sh: line 3: unexpected EOF while looking for matching `"' ./test.sh: line 4: syntax error:

问题 I'm trying to write a program that outputs a calendar. The user has to input the day in which the month starts (Monday-0, Tuesday-1, etc.), and how many days are in the month. Depending on what day the month starts, the calendar dates will start under that specific day. The issues I'm having is, I'm not sure how to get the calendar to start under a specific day, and I'm not sure how to get the dates to go to a new line after the 7 days. Any help would be appreciated. We haven't learnt much so

问题 The Background I was trying to solve the fourth realistic mission in hackthissite.org, and couldn't figure out exactly what SQL I should inject into the URL to retrieve the list of emails. After wasting a few hours, I gave up and looked at a solution, which gave this interesting line of code, which was to be injected after a select query: UNION ALL SELECT NULL, *, NULL, NULL FROM email I understand what this does and why; the hacker needs to create a query that has the same number of columns

问题 I have the following code: //myDataTable has the following collumns: UserName, Birthday and email. string name = "eric!"; string expression = "UserName = " + name; DataRow[] result = myDataTable.Select(expression); I want to select all rows with the name "eric!". The "!" gives me the following error: Cannot interpret token "!". How can I select all rows with such tokens? (I really need the "!" in the expression since I extract the userNames from a .sql file) 回答1: You should use your name