The C library function double sqrt(double x) returns the square root of x.
I give you a example below so can know how to use square root in c programing.
The following example shows the usage of sqrt() function.

#include <stdio.h>
#include <math.h>

int main ()
{

   printf("Square root of %lf is %lf\n", 4.0, sqrt(4.0) );
   printf("Square root of %lf is %lf\n", 5.0, sqrt(5.0) );
   
   return(0);
}

If you take a lot of calls on your iPhone, you may use a headset while driving or prefer answering calls over the loud speaker as opposed to the earpiece. As it happens iOS has quite a few accessibility options options including one that lets you change the default answer mode.

Here’s how:

1.Launch the Settings app from the Home screen of your iPhone.
2.Tap on General.
3.Scroll down towards the bottom and tap on Accessibility.
4.Now tap on Incoming Calls under the Physical & Motor section.
5.Here you have the option to toggle between Default, Headset, and Speaker. Default answers calls like normal through the normal earpiece in your iPhone while headset will use any headset you have paired with your phone. The last option, speaker, will utilize the built-in loud speaker and default to that whenever you answer a call. Tap the one you want.

That’s all there is to it. Your iPhone will now start obeying whatever incoming call option you’ve selected in Settings.

Jack Dawson and Rose DeWitt Bukater, portrayed in the movie by Leonardo DiCaprio and Kate Winslet, are almost entirely fictional characters (James Cameron modeled the character of Rose after American artist Beatrice Wood, who had no connection to Titanic history). The movie’s love story is also fiction. It was created by Titanic screenwriter and director James Cameron.Most of the underwater shots of the Titanic wreckage are real. In 1995, James Cameron hired the Russian vessel Akademik Mstislav Keldysh and its two submersibles. He made a total of twelve dives to film the underwater close-ups at a depth of 12,500 feet below the North Atlantic. Special cameras and housings were designed to withstand the 6,000 pounds per square inch of water pressure. Each dive lasted approximately fifteen hours, but the cameras could only store 500 feet of film, which meant that only twelve minutes of footage could be shot per dive. As a result, a few of the underwater shots had to be faked.

No, Jack(Jack Dawson) and Rose(Rose DeWitt Bukater), portrayed in the movie by Leonardo DiCaprio and Kate Winslet, are almost entirely fictional characters (James Cameron modeled the character of Rose after American artist Beatrice Wood, who had no connection to Titanic history).