C Language: sqrt function
(Square Root)
In the C Programming Language, the sqrt function returns the square root of x.
Syntax
The syntax for the sqrt function in the C Language is:
double sqrt(double x);
Parameters or Arguments
- x
- A value used when calculating the square root of x.
Returns
The sqrt function returns the square root of x. If x is negative, the sqrt function will return a domain error.
Required Header
In the C Language, the required header for the sqrt function is:
#include <math.h>
Applies To
In the C Language, the sqrt function can be used in the following versions:
- ANSI/ISO 9899-1990
sqrt Example
/* Example using sqrt by TechOnTheNet.com */ #include <stdio.h> #include <math.h> int main(int argc, const char * argv[]) { /* Define temporary variables */ double value; double result; /* Assign the value we will find the sqrt of */ value = 25; /* Calculate the square root of value */ result = sqrt(value); /* Display the result of the calculation */ printf("The Square Root of %f is %f\n", value, result); return 0; }
When compiled and run, this application will output:
The Square Root of 25.000000 is 5.000000
Similar Functions
Other C functions that are similar to the sqrt function:
Advertisements