[New Term] C++ Math Functions: `round()` #1043

tanishq-singh-2407 · 2022-10-05T11:18:05Z

Description

Closes #986

Type of Change

Adding a new entry

Checklist

All writings are my own.
My entry follows the Codecademy Docs style guide.
My changes generate no new warnings.
I have performed a self-review of my own writing and code.
I have checked my entry and corrected any misspellings.
I have made corresponding changes to the documentation if needed.
I have confirmed my changes are not being pushed from my forked main branch.
I have confirmed that I'm pushing from a new branch named after the changes I'm making.
Under "Development" on the right, I have linked any issues that are relevant to this PR (write "Closes # in the "Description" above).

Dusch4593 · 2022-10-05T11:19:55Z

@tanishq-singh-2301 Thanks for doing that, much appreciated! 😄 After I'm finished with review I'll tag you again so you can implement the feedback.

tanishq-singh-2407 · 2022-10-05T11:20:24Z

Sure,
Thanks.

Dusch4593

@tanishq-singh-2301 Left you some comments/suggestions to look at. Tag when when you're finished with implementing the feedback and I'll take another look. 😄

Dusch4593 · 2022-10-05T11:48:41Z

content/cpp/concepts/math-functions/terms/round/round.md

+result = std::round(num);
+```
+
+## Codecademy Example


Suggested change

## Codecademy Example

## Codebyte Example

Dusch4593 · 2022-10-05T12:01:36Z

content/cpp/concepts/math-functions/terms/round/round.md

+  - 'paths/computer-science'
+---
+
+The `round()` function returns the integral value that is nearest to the argument, with halfway cases rounded away from zero.


Suggested change

The `round()` function returns the integral value that is nearest to the argument, with halfway cases rounded away from zero.

The `round()` function returns the integer that is nearest to the argument, with halfway cases rounded away from zero.

Dusch4593 · 2022-10-05T12:01:56Z

content/cpp/concepts/math-functions/terms/round/round.md

@@ -0,0 +1,52 @@
+---
+Title: 'round()'
+Description: 'Returns the integral value that is nearest to the argument, with halfway cases rounded away from zero.'


Suggested change

Description: 'Returns the integral value that is nearest to the argument, with halfway cases rounded away from zero.'

Description: 'Returns the integer that is nearest to the argument, with halfway cases rounded away from zero.'

Dusch4593 · 2022-10-05T12:03:07Z

content/cpp/concepts/math-functions/terms/round/round.md

+
+The `cmath` library must be added at the top of the file.
+


Suggested change

The `cmath` library must be added at the top of the file.

I would omit this line since this point is covered in the parent math functions entry.

Dusch4593 · 2022-10-05T12:06:18Z

content/cpp/concepts/math-functions/terms/round/round.md

+The `cmath` library must be added at the top of the file.
+
+```cpp
+std::round(double num);


Suggested change

std::round(double num);

round(num);

Dusch4593 · 2022-10-05T12:19:04Z

content/cpp/concepts/math-functions/terms/round/round.md

+std::round(double num);
+```
+
+Argument must be a `double`/`float`/`long double`, and the return value will be the type of `integer`.


Suggested change

Argument must be a `double`/`float`/`long double`, and the return value will be the type of `integer`.

The `num` parameter must be a `double`,`float`, or `long double`. The return value will be an integer.

content/cpp/concepts/math-functions/terms/round/round.md

tanishq-singh-2407 · 2022-10-05T12:58:56Z

Done.
Please review updated code @Dusch4593

Thanks

Dusch4593

@tanishq-singh-2301 Just a few more comments from me 😄

Dusch4593 · 2022-10-06T02:24:49Z

content/cpp/concepts/math-functions/terms/round/round.md

+  - 'paths/computer-science'
+---
+
+The `round()` function returns the integer that is nearest to the argument, with halfway cases rounded away from zero.


Suggested change

The `round()` function returns the integer that is nearest to the argument, with halfway cases rounded away from zero.

The **`round()`** function returns the integer that closest to the argument, with halfway cases rounded away from zero.

content/cpp/concepts/math-functions/terms/round/round.md

Dusch4593 · 2022-10-06T02:32:52Z

content/cpp/concepts/math-functions/terms/round/round.md

+
+## Codebyte Example
+
+Use `round()` to round-off `10.89`:


Suggested change

Use `round()` to round-off `10.89`:

The following example is runnable and rounds the halfway case away from zero:

content/cpp/concepts/math-functions/terms/round/round.md

tanishq-singh-2407 · 2022-10-06T03:44:10Z

Done.
Please review updated code @Dusch4593

Thanks

Dusch4593

@tanishq-singh-2301 Just looked over your latest batch of changes. I left some final comments/suggestions for my review. After you implement this feedback, we will proceed to one more review of this entry. 😄

Dusch4593 · 2022-10-06T12:39:26Z

content/cpp/concepts/math-functions/terms/round/round.md

+The `num` parameter must be a `double`,`float`, or `long double`. The return value will be an integer.
+In `halfway case` the number get round-off to the next closest integer.


Suggested change

The `num` parameter must be a `double`,`float`, or `long double`. The return value will be an integer.

In `halfway case` the number get round-off to the next closest integer.

The `num` parameter must be a `double`,`float`, or `long double`. The return value will be an integer. If `num` is a halfway case where the decimal place is `.5` or higher, then the closest integer above `num` is returned.

Dusch4593 · 2022-10-06T12:45:40Z

content/cpp/concepts/math-functions/terms/round/round.md

+double num = 9.23;
+double result;
+
+result = std::round(num);
+
+std::cout << "The result is " << result << "!\n";
+// Output: The result is 9!


Suggested change

double num = 9.23;

double result;

result = std::round(num);

std::cout << "The result is " << result << "!\n";

// Output: The result is 9!

#include <iostream>

#include <cmath>

int main() {

double num1 = 9.23;

double result1;

result1 = std::round(num1);

std::cout << "The result of round(9.23) is " << result1 << "!\n";

double num2 = 4.5;

double result2;

result2 = std::round(num2);

std::cout << "The result of round(4.5) is " << result2 << "!\n";

}

I think we should include the #includes statements along with the code being nested in a main() method so that if a reader copy/pastes this example they can run it. 😄

Dusch4593 · 2022-10-06T12:45:56Z

content/cpp/concepts/math-functions/terms/round/round.md

+## Example 1
+
+```cpp
+double num = 4.5;
+double result;
+
+result = std::round(num);
+
+std::cout << "The result is " << result << "!\n";
+// Output: The result is 5!
+
+```
+
+


Let's keep the entry to just one "Example" and one "Codebyte Example". My suggestion here would be to combine the code from both of these snippets.

Suggested change

## Example 1

```cpp

double num = 4.5;

double result;

result = std::round(num);

std::cout << "The result is " << result << "!\n";

// Output: The result is 5!

```

Dusch4593 · 2022-10-06T12:46:02Z

content/cpp/concepts/math-functions/terms/round/round.md

+```
+
+
+## Example 2


Suggested change

## Example 2

## Example

content/cpp/concepts/math-functions/terms/round/round.md

Dusch4593 · 2022-10-06T12:48:37Z

content/cpp/concepts/math-functions/terms/round/round.md

+  std::cout << "The result is " << result << "!\n";
+  // Output: The result is 11!


Suggested change

std::cout << "The result is " << result << "!\n";

// Output: The result is 11!

std::cout << "The result is " << result << "!\n";

No need for output comments in Codebyte snippets.

content/cpp/concepts/math-functions/terms/round/round.md

Dusch4593 · 2022-10-06T12:51:15Z

content/cpp/concepts/math-functions/terms/round/round.md

@@ -0,0 +1,69 @@
+---
+Title: 'round()'
+Description: 'Returns the integer that is nearest to the argument, with halfway cases rounded away from zero.'


Suggested change

Description: 'Returns the integer that is nearest to the argument, with halfway cases rounded away from zero.'

Description: 'Returns the integer that is nearest to the argument, with halfway cases rounded away from the ending zero.'

Dusch4593 · 2022-10-06T12:51:23Z

content/cpp/concepts/math-functions/terms/round/round.md

+  - 'paths/computer-science'
+---
+
+The **`round()`** function returns the integer that is closest to the argument, with halfway cases rounded away from zero.


Suggested change

The **`round()`** function returns the integer that is closest to the argument, with halfway cases rounded away from zero.

The **`round()`** function returns the integer that is closest to the argument, with halfway cases rounded away from the ending zero.

tanishq-singh-2407 · 2022-10-07T07:05:09Z

working on it!

…' into tanishq-singh-round

tanishq-singh-2407 · 2022-10-07T07:27:21Z

Done, please review and tell me if any more changes is required?
@Dusch4593

Thanks

HishamT

LGTM!

tanishq-singh-2407 · 2022-10-14T03:03:53Z

Okay

tanishq-singh-2407 · 2022-10-16T09:55:22Z

any update? @HishamT

HishamT

LGTM!

yangc95

I had one additional comment before merge. @tanishq-singh-2301

yangc95 · 2022-10-21T04:59:05Z

content/cpp/concepts/math-functions/terms/round/round.md

+round(num);
+```
+
+The `num` parameter must be a `double`,`float`, or `long double`. The return value will be an integer. If the decimal in num is `0.5` or higher, the closest integer greater than `num` is returned.


Suggested change

The `num` parameter must be a `double`,`float`, or `long double`. The return value will be an integer. If the decimal in num is `0.5` or higher, the closest integer greater than `num` is returned.

- The `num` parameter must be a `double`,`float`, or `long double`.

- The return value will be an integer.

- If the decimal in num is `0.5` or higher, the closest integer greater than `num` is returned.

yangc95

LGTM

github-actions · 2022-10-24T19:20:33Z

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tanishq-singh-2407 added 3 commits October 5, 2022 01:37

New Entry: C++ Math Functions: round() (Codecademy#986)

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fix: removed unwanted fun round() from main (Codecademy#986)

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New Entry: C++ Math Functions: round() (Codecademy#986)

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[Term Entry] C++ Math Functions: round() #986

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⚡ refactor: cpp math-function round() (Codecademy#986)

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⚡ refactor: cpp math-function round() (Codecademy#986)

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⚡ refactor: cpp math-function round() (Codecademy#986)

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[New Term] C++ Math Functions: `round()` #1043

[New Term] C++ Math Functions: `round()` #1043

tanishq-singh-2407 commented Oct 5, 2022 •

edited by Dusch4593

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github-actions bot commented Oct 24, 2022

	The `round()` function returns the integral value that is nearest to the argument, with halfway cases rounded away from zero.
	The `round()` function returns the integer that is nearest to the argument, with halfway cases rounded away from zero.

	Description: 'Returns the integral value that is nearest to the argument, with halfway cases rounded away from zero.'
	Description: 'Returns the integer that is nearest to the argument, with halfway cases rounded away from zero.'

	Argument must be a `double`/`float`/`long double`, and the return value will be the type of `integer`.
	The `num` parameter must be a `double`,`float`, or `long double`. The return value will be an integer.

	The `round()` function returns the integer that is nearest to the argument, with halfway cases rounded away from zero.
	The `round()` function returns the integer that closest to the argument, with halfway cases rounded away from zero.

	Use `round()` to round-off `10.89`:
	The following example is runnable and rounds the halfway case away from zero:

		The `num` parameter must be a `double`,`float`, or `long double`. The return value will be an integer.
		In `halfway case` the number get round-off to the next closest integer.

-double num = 9.23;
-double result;
-result = std::round(num);
-std::cout << "The result is " << result << "!\n";
-// Output: The result is 9!
+#include <iostream>
+#include <cmath>
+int main() {
+  double num1 = 9.23;
+  double result1;
+  result1 = std::round(num1);
+  std::cout << "The result of round(9.23) is " << result1 << "!\n";
+  double num2 = 4.5;
+  double result2;
+  result2 = std::round(num2);
+  std::cout << "The result of round(4.5) is " << result2 << "!\n";
+}

		std::cout << "The result is " << result << "!\n";
		// Output: The result is 11!

[New Term] C++ Math Functions: round() #1043

[New Term] C++ Math Functions: round() #1043

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tanishq-singh-2407 commented Oct 5, 2022 • edited by Dusch4593 Loading

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github-actions bot commented Oct 24, 2022

[New Term] C++ Math Functions: `round()` #1043

[New Term] C++ Math Functions: `round()` #1043

tanishq-singh-2407 commented Oct 5, 2022 •

edited by Dusch4593

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