Why does subtracting a pointer value from an address result in gap of 8 times the pointer value? In the following snippet, pointer addresses and values are referenced as the type size_t. However as the title says, the last subtraction does not make sense to me. It acts like, as if it subtracts the number multiplied with 8 instead of the actual value as seen in the int array.  #include &lt;stdio.h&gt; #include &lt;stdint.h&gt;  int main() {     int i[6] = {2, 0, 1, 0, 20, 24};      void *ptr = &amp;i[2];      printf("%zu\n", ((size_t*)ptr));     printf("%zu\n", *((size_t*)ptr));     printf("%zu\n", ((size_t*)ptr) - *((size_t*)ptr)); }
Pointer Arithmetic Does anyone have any good articles or explanations (blogs, examples) for pointer arithmetic?  Figure the audience is a bunch of Java programmers learning C and C++.
I have forgotten the password or username for my Google account, or I'm unable to access my account for other reasons.  How can I recover my account?  (This Q&amp;A is meant as a general description for all Google and Gmail username/password questions. See: ) In polar coordinate how we can get $dx\;dy=r\;dr\;d\theta$?  with these parameters:    $r=\sqrt{x^2+y^2}$ $x=r\cos\theta$ $y=r\sin\theta$  Tanks. I watch a lot of old movies, and I've noticed that American actors of the 1930s and 1940s often spoke in a quasi-generic-posh-British accent.  Katherine Hepburn's accent would be the perfect example. It seems exaggerated, and I imagine it was not common off the stage and screen. What was that? Was it just an accent or was it a dialect? Did real people actually speak that way? How does Mathematica integrate? How to get a combined ticket in IRCTC (Indian Railway) Suppose I want to go from Station A to Station C but Station C is not a stoppage of some train say train 01, so I can get a combined ticket from station A to Station B  through train 01 plus Station B to station C through a different train say 02, so my total fare will be of same ticket as from Station A to Station C.  We can get Combined ticket from the Booking Window but how's that possible on the IRCTC website? Is there a website listing the location of all the Windows 10 lock screens? Windows 10 has an extensive collection of lock screen photos, many of which have  here on Travel.SE.  Is there a website which lists the location of all of these photos? I imagine Microsoft has purchased an official license, so they should have a record about the photographer and the place where the photo was taken. In order to show $e^{x+y}=e^{x}e^{y}$ by using Exponential Series, I got the following:   $$e^{x}e^{y}=\Big(\sum_{n=0}^{\infty}{x^n \over n!}\Big)\cdot \Big(\sum_{n=0}^{\infty}{y^n \over n!}\Big)=\sum_{n=0}^{\infty}\sum_{k=0}^n{x^ky^n \over {k!n!}}$$  But, where should I go next to get $e^{x+y}=\sum_{n=0}^{\infty}{(x+y)^n \over n!}$.  Thanks in advance. Floating sidebar can get too long and obscure footer Making mathematical animations with Mathematica Does measurement, quantum in particular, always increase the total entropy? Prove that the product of two continuous functions is continuous On a "1-D line", the point that minimizes the sum of the distances is the median, WHY? There is a set A which contains some discrete points (1-dimension), for example {1, 3, 37, 59}. And I want to pick one point from A which can minimize the sum of distances between this point and others.  For this "1-D line", many people say the median is the right point, but could anybody give me a concrete proof on it? Pseudo-terminal message in script I am trying to check if the user_picture field is empty using the twig template, but I am not able to do this.  I tried lots of ways:-  {% if node.user_picture.value %} {% if node.user_picture.entity %} {% if content.user_picture.value %} {% if content.user_picture|render.entity %} {% if content.user_picture|render %}     Sample of code:    {% if node.user_picture.value %}     &lt;p&gt;User-picture 02&lt;/p&gt;     {{ user_picture }}   {% else %}     &lt;p&gt;Anymonus-picture 02&lt;/p&gt;     &lt;div&gt;       &lt;a href="#"&gt;&lt;img src="{{base_path}}/WEBSITE/themes/THEME/images/anonymous.jpg" alt=""&gt;&lt;/a&gt;     &lt;/div&gt;   {% endif %} My furnace pilot light keeps going out so I changed the thermocouple. Now the furnace will come on and heat up to the degree set on my thermostat, then the pilot light will go out and the furnace will not come back on.    Could the thermostat be bad and cause the pilot light to go out? Can ubuntu be installed in intel kabylake 7th gen processor? I am using a 7th generation i5 processor(7200,2.50 ghz).The processor also have intel hd graphics 620 and nvidia geforce 940mx 2gb graphics card. I read previously that only windows 10 can be installed to this specific processor.  Is it true no version of ubuntu can be used with this processor?  If it's possible to install ubuntu using this processor, what additional steps other than the normal installation process should I undertake to get Ubuntu working? How to change IP address to point to localhost? What does the "static" modifier after "import" mean? This is frustrating for me. The UV-textures to vertex cols add-on doesn't seem to work despite the specific instructions. Any other tutorials I can find are either very old or very poor.  I'd like to know how to do this in Blender 2.79. I need vertex colors in my ambient occlusion for use in Shader Forge. Government investigating home library of missing inventor This is a short story from the 50s or 60s.  A scientist or inventor has invented either teleportation or a space drive and has disappeared - leaving no documentation or clues except his extensive home library.  The government gathers all types of scientists to attempt to duplicate his research.  Several months later, as they are about to launch the first space drive space ship, the officer in charge reveals that there was no 'disappeared inventor'.  The greatest step toward a new impossible concept is knowing that it has already been done.