# C Program to Find Square Root of a Number using sqrt Function

• Write a c program to read a number and find square root using sqrt function.

#### Required Knowledge

We will first take a number as input from user using scanf function then calculate square root of number by calling sqrt function of math.h header file.

## C program to find square root of a number

```/*
* C program to calculate square root of a number
* using sqrt function
*/
#include <stdio.h>
#include <math.h>

int main () {
double x, result;
printf("Enter a number\n");
scanf("%lf", &x);

result = sqrt(x);
printf("Square root of %lf = %lf\n", x, result);

return 0;
}
```

Output
```Enter a number
49
Square root of 49.000000 = 7.000000
```
```Enter a number
85.453
Square root of 85.453000 = 9.244079
```

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