How to type the root number in c++

In C, the root sign can be calculated through the sqrt() function, which accepts floating-point number parameters and returns its square root: Function call syntax: double sqrt(double x); Parameters: The floating-point number x to calculate the square root; Return value: The square root of x if x is nonnegative; otherwise NaN (not a number).

The root number in C

In C, you can use sqrt() Function calculates the root. This function accepts a floating point number as argument and returns its square root.

Use sqrt()Function

Syntax:

<code class="cpp">double sqrt(double x);</code>

Parameters:

• x: The floating point number to calculate the square root

Return value: The square root of

• x, if x is not Negative number; otherwise returns NaN (not a number)

Example:

<code class="cpp">#include <iostream>
#include <cmath>

int main() {
  double number = 9.0;
  double square_root = sqrt(number);

  std::cout << "平方根为：" << square_root << std::endl;

  return 0;
}</code>

Output:

<code>平方根为：3</code>

The above is the detailed content of How to type the root number in c++. For more information, please follow other related articles on the PHP Chinese website!