How to use root sign in c++

Use the sqrt() function in C to find the square root. The syntax is: double y = sqrt(x); where x is a non-negative number and y is the calculated square root value. Example: Find the square root of 16: #include , double number = 16, double squareRoot = sqrt(number), cout << "The square root is:" << squareRoot << endl; .

How to use the root sign in C

In C, you can use sqrt() Function to find the square root of a number. This function belongs to the math library, and the header file needs to be included in the program:

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

The following is the syntax for using the sqrt() function to find the square root:

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

Where:

• x is the number to calculate the square root (must be a non-negative number).
• y is the calculated square root value.

Example:

Find the square root of the number 16:

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

int main() {
  double number = 16;
  double squareRoot = sqrt(number);
  cout << "平方根为：" << squareRoot << endl;

  return 0;
}</code>

Output:

<code>平方根为：4</code>

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