In this article, we are going to learn how to find the square root of a number. A square root of a number is a value that, when multiplied by itself, gives the number. We will learn about the sqrt() function which is available in C standard library. The header file required for this function is.

### C language sqrt() function

The sqrt() function takes a single argument in double and returns its square root. Let us see our code example to calculate the square root of a number.

#### syntax of sqrt() function is:

```
double sqrt(double arg);
```

### Program to find Square Root of a Number in C

```
#include<stdio.h>
#include<math.h>
int main()
{
double number;
double result;
printf("Please enter the number: ");
scanf("%lf",&number);
result = sqrt(number);
printf("The Square root of %d is %.2lf",number , result);
return 0;
}
```

Output

```
```