C sqrt function gets the square root of num

Syntax

C sqrt function has the following format.

• float sqrtf(float num);
• double sqrt(double num);
• long double sqrtl(long double num);

Header

C sqrt functions are from header file math.h.

Description

C sqrt functions return the square root of num.

Example

The following code calculates square root by using C sqrt function.

#include <math.h>
#include <stdio.h>
/*w w  w .  ja v a2  s.c om*/
int main(void)
{
   printf("%f", sqrt(16.0));
}

The code above generates the following result.