Whats the function for finding the square root of a no.?

Question

and what would be the header file that I should include with it?

Answer 1

in sololearn use #include<cmath.h> as a header file
but if u are using turbo c++then use #include<math.h>

Answer 2

https://www.programiz.com/cpp-programming/library-function/cmath/sqrt

Library: #include <cmath>
Function: sqrt(num)

ie:
double x = 25;
x = sqrt(x);

'x' is 5.0

Answer 3

sqrt()

Answer 4

you can use sqrt()

Answer 5

what is the use of namspace std in c++ program

Answer 6

#include <iostream>
#include <cmath>
using namespace std;

int main()
{
int num = 10;

cout << "Square Root of " << num << " is: "<< sqrt(num) << endl;

return 0;
}

Another student said this code doe no work. I ran this in SolLearn compiler without a problem.

Notice to run math functions you must have this statement:
#include <cmath>

Answer 7

sqrt() function will be usefull