# C Programming - Floating Point Issues - Discussion

Discussion Forum : Floating Point Issues - Find Output of Program (Q.No. 4)

4.

What will be the output of the program?

```
#include<stdio.h>
#include<math.h>
int main()
{
printf("%f\n", sqrt(36.0));
return 0;
}
```

Answer: Option

Explanation:

*printf("%f\n", sqrt(36.0));* It prints the square root of 36 in the float format(i.e 6.000000).

**Declaration Syntax**: *double sqrt(double x)* calculates and return the positive square root of the given number.

Discussion:

15 comments Page 1 of 2.
Surbhi Rajput said:
3 years ago

How it can be double?

Janavi said:
4 years ago

Generally, the float value will display like six digits after the decimal point so, the output of the above program will be 6.000000 because of √(36.0) =6.000000.

So whenever we have to calculate the sq.root of decimal digits there are always ans is value .000000.

So whenever we have to calculate the sq.root of decimal digits there are always ans is value .000000.

Deepak said:
7 years ago

If 36.0 is double then it should give 14 digits of precision then answer would be 6.00000000000000.

Raj said:
8 years ago

How 36 is double, please explain?

Ishi said:
8 years ago

@D Suresh.

As you said float value display six value after decimal than, what about double and long double?

As you said float value display six value after decimal than, what about double and long double?

Meghana said:
8 years ago

Can anyone explain me how 36.0 is double?

Yogesh tiwari said:
9 years ago

Sir I am not satisfied with your answer, it turbo c it create error please explain.

Nishant said:
10 years ago

But when I tried in turbo C it return 0. Why?

Sankari said:
10 years ago

36.0 is double, how it is double can anyone explain me please?

What is double and float?

What is double and float?

D SURESH said:
10 years ago

Generally float value will display like six digits after the decimal point so, output of the above program will be 6.000000 because sqrt (36.0) =6.000000.

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