while-loop

I have the following php code: <?php if (!isset($_REQUEST['search'])){ while(($write=mysql_fetch_array($gamesearched)) != null){ echo "Found!"; }else{ echo "No results"; } } ?> And it's giving me an error: Parse error: syntax error, unexpected 'else' (T_ELSE) in C:\php\www\Gameplay\backgame.php on line 41 jcsanyi In PHP, a while statement can't have an else clause. You need something external to the while that can tell you if it was executed at least once. How about something like this? $total = mysql_num_rows($gamesearched); if ($total > 0) { while (($write=mysql_fetch_array($gamesearched)) !

I can understand how to use the while loop perfectly if just to compare it with one thing, for example: x=int(input("Guess my number 1-10")) while x!=7: print("Wrong!") x=int(input("Try again: ")) print("Correct it is 7. ") However, if I want to compare two or more values through while loops (especially if I want to validate something), I would do something like this: number=input("Would you like to eat 1. cake 2. chocolate 3. sweets: ") while number!= "1" or number != "2" or number != "3": number=input("Please input a choice [1,2,3]") #Some code... When number does equal 1, 2 or 3, the

I've always struggled with while loops because they barely ever work for me. They always cause my Unity3D application to freeze, but in this instance I really need it to work: bool gameOver = false; bool spawned = false; float timer = 4f; void Update () { while (!gameOver) { if (!spawned) { //Do something } else if (timer >= 2.0f) { //Do something else } else { timer += Time.deltaTime; } } } Ideally, I want those if statements to run as the game runs. Right now it crashes the program and I know it's the while loop which is the problem because it freezes anytime I uncomment it out. Update() is

This question already has an answer here: How to use Scanner to accept only valid int as input 6 answers My program should ask user to enter the amount they want to withdraw from their account and calculating the current balance after withdrawing. The requirement for withdrawing is minimum 100 and maximum 1000. If the user enters wrong input the program should re-promt and ask user to enter amount again. This process will keep repeating until the user puts right amount. Once the right amount is choosen it should calculate and display the current balance. This is how I tried, but I failed to

I have some code that I want to ask the user for a number between 1-100 and if they put a number between these it will print (Size: (input)) and break the loop, if however, they put in a number outside 1-100 it will print (Size: (input)), and proceed to re-ask them for a number, I have run into some problems though. c=100 while c<100: c=input("Size: ") if c == 1 or 2 or 3: print ("Size: "+c) break else: print ("Size: "+c) print ("Invalid input. Try again.") This should do it. c=input("Size: ") while int(c)>100 or int(c)<1: #Will repeat until the number is between 1 and 100, inclusively. #It

Why is this not working? <?php $select = "select * from messages where user='$u'"; $query = mysqli_query($connect,$select) or die(mysqli_error($connect)); $row = mysqli_num_rows($query); $result = mysqli_fetch_assoc($query); $title = mysqli_real_escape_string($connect,trim($result['title'])); $message = mysqli_real_escape_string($connect,trim($result['message'])); while(($result = mysqli_fetch_assoc($query))){ echo $title; echo '<br/>'; echo '<br/>'; echo $message; } ?> where as this works - <?php echo $title; ?> SORRY TO SAY, BUT NONE OF THE ANSWERS WORK. ANY OTHER IDEAS? If your mysqli query

I want to make a while loop, nested in a for loop in Matlab in order to find the distance between different pairs in the data. My data have the following form ID lon lat time 1 33.56 40.89 803 2 32.45 41.03 803 3 35.78 39.85 803 2 33.04 40.21 804 3 36.89 40.23 804 2 33.98 39.33 806 2 33.67 39.73 809 3 37.02 40.77 809 lon and lat are geographical coordinates. In the for loop, I want to take the first row from the matrix and then in the while loop check all other rows and compute the distance between the pairs as long as the condition in the while is true . What I mean is that for the first row