if ( variable )
{
    
}
else
{
    Console.WriteLine("Wrong")
}

He doesn't know what "Not" is it :|

By Manoochehr Mojgani, 2017-12-13 17:05:36
A,B=map(str,input().split())        # let's begin by casting strings to strings!

while(int(A)!=0 and int(B)!=0):

    tamanhoa=0
    tamanhob=0

    for i in range(len(A)):
        tamanhoa+=1                 # wonderful way to determine the length of
                                    # a string!
    for i in range(len(B)):
        tamanhob+=1

    vA = [0]*tamanhoa
    vB = [0]*tamanhob

    if tamanhoa>tamanhob:
        vA = [0]*tamanhoa           # Just to make sure it really gets set!!!
        vB = [0]*tamanhoa

        for i in range(tamanhoa-1,-1,-1):
            vA[i]=int(A[i])         # he even saved an operation by casting
                                    # the char to int at the same time!
        for i in range(tamanhob):
            vB[i+1]=int(B[i])
    elif tamanhoa<tamanhob:
        vA = [0]*tamanhob           # Just to make sure it really gets set!!!
        vB = [0]*tamanhob

        for i in range(tamanhoa):
            vA[i+1]=int(A[i])

        for i in range(tamanhob-1,-1,-1):
            vB[i]=int(B[i])

        tamanhoa=tamanhob

    else:
        for i in range(tamanhoa):
            vA[i]=int(A[i])

        for i in range(tamanhob):
            vB[i]=int(B[i])

    print(vA)
    print(vB)
    
    carry = 0

    for i in range(tamanhoa-1,-1,-1):
        soma = vA[i] + vB[i]
        if soma > 9:
            carry += 1
            if vA[i-1]!= 9:
                vA[i-1] += 1
            else:
                vB[i-1] +=1


    if carry == 0:
        print('No carry operation.')
    elif carry == 1:
        print(carry, 'carry operation.')
    else:
        print(carry, 'carry operations.')

    A,B=map(str,input().split())    # why bother casting strings to int? yay

    if int(A)==0 and int(B)==0:
        break

This wonder was found within answers to a university programming test. Code as-is, comments added by me.

By Anonymous, 2017-12-14 00:09:27
<?php
    if(isset($_POST['csrf'])){
        if($_POST['csrf'] !== $_SESSION['csrf']){
            return 'session expired!';
        }
    }

In all Sama Samaneh university and class management system from iran :)

By Mahmoud etc, 2017-12-14 11:21:23
try {
    User.ClaimToken();
} 
catch {
    User.ClaimToken();
}
By Anonymous, 2017-12-22 08:44:59
  $guard = ($vars->a_payment) + (0) * $price;
  if ($bless >= $guard) {
    $amount = $bless;
  }

Why not to write just 1 line?! $amount = max($bless, $vars->a_payment);

By Anonymous, 2018-02-05 17:27:25
...
if (alignEntrySize & 1)
    alignEntrySize++;
if (alignEntrySize & 2)
    alignEntrySize += 2;
...
By dzuma, 2018-02-08 18:19:17
string month = DateTime.Today.Month.ToString();
if (DateTime.Today.Month < 10)
{
    month = "0" + month;
}
string day = DateTime.Today.Day.ToString();
if (DateTime.Today.Day < 10)
{
    day = "0" + day;
}

string dateCorrect = String.Format("{0}.{1}.{2}", DateTime.Today.Year, month, day);

string dateDue = "";
if (transferFields.DueDate.SelectedDate.HasValue)
{
    var dateDuearr = transferFields.DueDate.Value.Split(' ')[0].Split('.');
    dateDue = dateDuearr[2] + '.' + dateDuearr[1] + '.' + dateDuearr[0];
}
else {
    dateDue = dateCorrect;
}

Real developers don't use built in parsing and formatting methods.

By You will be proud of our code!, 2017-12-12 09:53:08
//count to 10
#include <iostream>
#include <string>

int main()
{
  int i = 0;
  
  beginning:
  if (i < 10) {
      std::cout << ++i << std::endl;
      goto beginning;
  }
  else goto end;

  end:
  return 0;
}
By Yoges, 2017-12-19 14:43:26
@Override
public void afterTextChanged(Editable s) {
    switch (paymentType) {
        case 0:
            if (s.length() == 9) etPaymentAmount.requestFocus();
            break;
        case 1:
            if (s.length() == 9) etPaymentAmount.requestFocus();
            break;
    }
}
By Anonymous, 2017-12-22 12:41:02
/**
 * Creates hash of client/customer password
 * @param string $password The actual password
 * @return string MD5 hash of password with salt
 */
public static function hashPassword($password)
{
	return md5($password . $password. 'SOME-SECRET-STRING' . $password);
}
By Anonymous, 2018-02-21 13:22:27
<?php
$now = time();

while ($now + 10 > time()) {
    
    // Just chill...smoke a blunt
}

echo "Done.\n";
By Sobak, 2015-07-21 12:30:55
 foreach (Byte bajt in data ) {
                    BufferIndex = i++;
                    if (!char.IsControl((char)bajt))
                        MyCharacter = Convert.ToChar(bajt).ToString();//Encoding.ASCII.GetString(new[]{bajt});
                    else
                        MyCharacter = " ";

                    if (BufferIndex == 200)
                        {
                            int a = BufferIndex;
                        }

                    
                    if (BufferIndex < 200)
                    {
                        sw.WriteLine("PrintBuffer1[" + BufferIndex + "] :=\t" + bajt + "\t; // " + String.Format(@"0x{0:x2}", (ushort)bajt) + "\t" + MyCharacter );
                    }

                    if (BufferIndex >= 200 && BufferIndex  < 400)
                    {
                        BufferIndex = BufferIndex - 200;
                        sw.WriteLine("PrintBuffer2[" + BufferIndex + "] :=" + bajt + "; // " + String.Format(@"0x{0:x2}", (ushort)bajt) + "   " + MyCharacter);
                    }
                    if (BufferIndex >= 400 && BufferIndex < 600)
                    {
                        BufferIndex = BufferIndex - 400;
                        sw.WriteLine("PrintBuffer3[" + BufferIndex + "] :=" + bajt + "; // " + String.Format(@"0x{0:x2}", (ushort)bajt) + "   " + MyCharacter);
                    }
                    if (BufferIndex >= 600 && BufferIndex < 800)
                    {
                        BufferIndex = BufferIndex - 600;
                        sw.WriteLine("PrintBuffer4[" + BufferIndex + "] :=" + bajt + "; // " + String.Format(@"0x{0:x2}", (ushort)bajt) + "   " + MyCharacter);
                    }
                    if (BufferIndex >= 800 && BufferIndex < 1000)
                    {
                        BufferIndex = BufferIndex - 800;
                        sw.WriteLine("PrintBuffer5[" + BufferIndex + "] :=" + bajt + "; // " + String.Format(@"0x{0:x2}", (ushort)bajt) + "   " + MyCharacter);
                    }
                    if (BufferIndex >= 1000 && BufferIndex < 1200)
                    {
                        BufferIndex = BufferIndex - 1000;
                        sw.WriteLine("PrintBuffer6[" + BufferIndex + "] :=" + bajt + "; // " + String.Format(@"0x{0:x2}", (ushort)bajt) + "   " + MyCharacter);
                    }
                    if (BufferIndex >= 1200 && BufferIndex < 1400)
                    {
	                        BufferIndex = BufferIndex - 1200;
                        sw.WriteLine("PrintBuffer7[" + BufferIndex + "] :=" + bajt + "; // " + String.Format(@"0x{0:x2}", (ushort)bajt) + "   " + MyCharacter);
                    }
                    if (BufferIndex >= 1400 && BufferIndex < 1600)
                    {
                        BufferIndex = BufferIndex - 1400;
                        sw.WriteLine("PrintBuffer8[" + BufferIndex + "] :=" + bajt + "; // " + String.Format(@"0x{0:x2}", (ushort)bajt) + "   " + MyCharacter);
                    }
                    if (BufferIndex >= 1600 && BufferIndex < 1800)
                    {
                        BufferIndex = BufferIndex - 1600;
                        sw.WriteLine("PrintBuffer9[" + BufferIndex + "] :=" + bajt + "; // " + String.Format(@"0x{0:x2}", (ushort)bajt) + "   " + MyCharacter);
                    }
                    if (BufferIndex >= 1800 && BufferIndex < 2000)
                    {
                        BufferIndex = BufferIndex - 1800;
                        sw.WriteLine("PrintBuffer10[" + BufferIndex + "] :=" + bajt + "; // " + String.Format(@"0x{0:x2}", (ushort)bajt) + "   " + MyCharacter);
                    }
                    if (BufferIndex >= 2000 && BufferIndex < 2200)
                    {
                        BufferIndex = BufferIndex - 2000;
                        sw.WriteLine("PrintBuffer11[" + BufferIndex + "] :=" + bajt + "; // " + String.Format(@"0x{0:x2}", (ushort)bajt) + "   " + MyCharacter);
                    }
                    if (BufferIndex >= 2200 && BufferIndex < 2400)
                    {
                        BufferIndex = BufferIndex - 2200;
                        sw.WriteLine("PrintBuffer12[" + BufferIndex + "] :=" + bajt + "; // " + String.Format(@"0x{0:x2}", (ushort)bajt) + "   " + MyCharacter);
                    }

                        
                }

don't repeat yourself.. whyy we don't have PrintBufeer[i] ?

By Anonymous, 2016-02-08 09:52:40
var list = new List<string>() { // Assume some items in the list };

for (var i = 0; i < list.Count; i++)
{
    var item = list[i];
    list.Remove(item);
    
    i--;
}

Simple alternative to List.Clear()

By Taylor, 2017-12-13 07:07:56
int min(int a,int b,int c) //Function to return the minimum.
{
  if(a < b)
  {
    if(a < c)return a;
    else if(a > c)return c;
    else return a;
  }
  else if(a > b)
  {
    if(b < c)return b;
    else if(b > c)return c;
    else return b;
  }
  else
  {
    if(a < c) return a;
    else if(a > c) return c;
    else return a;
  }
}

This kind of things make me hate my work.

By Another random student of algorithms., 2017-12-14 00:45:52
    function changePassword() {
        if (isInputEmpty()) {
            $.ajax({
                type: 'POST',
                data: '...'
                url: '...',
                success: function (result) {
                    if (result.substring(0, 3) != "!!!") {
                        //success
                    } else {
                        //faliure
                    }
                },
                error: function () {
                    }
            });
        }
    }

And of course,in production, it always reported success and never changed the password, because of equally bad server code.

By You will be proud of our code!, 2017-12-15 11:30:02