# How to use square root in c programming?

I was trying to use square root in c programming but I have failed. So I want to know How to use square root in c programming?

Can anyone help me?

The C library function **double sqrt(double x)** returns the square root of **x**.

I give you a example below so can know how to use square root in c programing.

The following example shows the usage of sqrt() function.

#include <stdio.h> #include <math.h> int main () { printf("Square root of %lf is %lf\n", 4.0, sqrt(4.0) ); printf("Square root of %lf is %lf\n", 5.0, sqrt(5.0) ); return(0); }

In C programming language, the sqrt function returns the square root of x. The syntax for the sqrt function in C programming language is

double sqrt(double x);