while-loop

问题 I have a database table and that table has 6 rows. What I want is to display that 6 rows in a html page using a 3 column and 2 row table. I know how to work with php arrays and while loops. My problem is how to limit the array to put 3 items in the first row and put the other 3 in the next row. this is what i have tried but didn't work <div id="maincontent"> <!-- class one --> <?php $getSection = getSection(); $i=0; while($allSection = mysql_fetch_array($getSection)){ ?> <div class="subconent

问题 I have code that opens the OpenFileDialog, I'm checking the size of the file to make sure it doesn't exceed specific limit. But, if the user selected a big sized file I need to warn him and lead him back to the dialog to select a different file or click cancel. This is what I've tried: OpenFileDialog dialog = new OpenFileDialog(); dialog.Filter = "Jpeg files, PDF files, Word files|*.jpg;*.pdf;*.doc;*.docx"; while (dialog.ShowDialog() != DialogResult.Cancel) { var size = new FileInfo(dialog

问题 Is the C++ code below legal, or is there a problem with my compiler? The code was complied into a shared library using gcc version 4.4.6 20110731 (Red Hat 4.4.6-3) (GCC) and openMP and then called via R 2.15.2. int it=0; #pragma omp parallel sections shared(it) { #pragma omp section { std::cout<<"Entering section A"<<std::endl; for(it=0;it<10;it++) { std::cout<<"Iteration "<<it<<std::endl; } std::cout<<"Leaving section A with it="<<it<<std::endl; } #pragma omp section { std::cout<<"Entering

问题 This question already has an answer here : Which file is Perl's diamond operator (null file handle) currently reading from? (1 answer) Closed 6 years ago . A simple program with while( <> ) handles files given as arguments ( ./program 1.file 2.file 3.file ) and standard input of Unix systems. I think it concatenates them together in one file and work is line by line. The problem is, how do I know that I'm working with the first file? And then with the second one. For a simple example, I want

问题 I can't understand the implementation of a while loop in android. Whenever I implement a while loop inside the onCreate() bundle, (code shown below) public void onCreate(Bundle icicle) { super.onCreate(icicle); setContentView(R.layout.main); TextView=(TextView)findViewById(R.id.TextView); while (testByte == 0) updateAuto(); } nothing boots up, and the program enters a "hanging" state after a while and I can't understand why. Testbyte is as follows: byte testByte == 0; and updateAuto() is

问题 Flip a coin. Success, you win 100, otherwise you lose 50. You will keep playing until you have money in your pocket a . How can the value of a at any iteration be stored? a <- 100 while (a > 0) { if (rbinom(1, 1, 0.5) == 1) { a <- a + 100 } else { a <- a - 50 } } As a final result, when the while loop ends, I would like to be able to look at the value of a for each iteration, instead of just the final result. I consulted the post on Counting the iteration in sapply, but I wasn't able to apply

问题 Flip a coin. Success, you win 100, otherwise you lose 50. You will keep playing until you have money in your pocket a . How can the value of a at any iteration be stored? a <- 100 while (a > 0) { if (rbinom(1, 1, 0.5) == 1) { a <- a + 100 } else { a <- a - 50 } } As a final result, when the while loop ends, I would like to be able to look at the value of a for each iteration, instead of just the final result. I consulted the post on Counting the iteration in sapply, but I wasn't able to apply

问题 My program has a while-loop that runs some code, generating various text statements as it goes along. The problem is that the UILabel only prints the last line of text in the series (my understanding is because it iterates too quickly). How do I get the label to print all of the text encountered, like one would see in console output? I looked at this link but the example doesn't seem to match my situation and not sure how to implement the fix (if that's even the right one): Update Label In

问题 I'm looking to keep the following menu repeating: Choose an Option 1 - FIND 2 - IN-SHUFFLE 3 - OUT-SHUFFLE So that when a user selects an option (and this will be executed), afterwards they can select other options as well. Problem: My code keeps the menu repeating without stopping. import java.util.Scanner; public class MainMenu { public static void main(String[] args) { int userChoice; userChoice = menu(); } private static int menu() { Scanner scanner = new Scanner(System.in); System.out

问题 I have a while loop and each one displays a <li></li> in a list, is there a way to tell php that every other loop should echo say: <li style="background: #222;"></li> and in my css I would have another colour #111 set as default so users of my site can easily determine which row of data they are seeing? my code as requested: function user_details($dbc, $q, $details) { echo '<ul class="userlist">'; while ($user = $q -> fetch(PDO::FETCH_ASSOC)) { echo '<li><span>(' . $user['id'] . ')</span> <a