Forked and approved

• Restructured tests

• Use approx equality

• Added useful assertion messages

• Removed unnecessary block of tests

Cool

In Python is very simple

Example

age = int(19)
txt = str("Hello my name is Beno, i'am {} years old")
print(txt.format(age))

Added const for the char* r

That's just a formatting preference. What's I think is a bad formatting preference is putting anything after a scope-closing } on the same line.

Just a minor Feedback:
if you're using the curlybrackets, then put them in the next row so the code is simpler to read.

petty mid

char fanis(char r, int k) {
for (; *r; *r++)
*r = k + *r;
return r;
}

+1
https://www.snopes.com/fact-check/titanic-first-sos/

Maybe change the function nameto follow best practise, like equal_sum?.

Check this: https://ieftimov.com/posts/testing-floats-in-ruby/#with-rspec

Thanks for noting; is this causing issues?

it looks like you are using strict equality on floating-point numbers ;-)

Suggesting a correction. The statement "SOS (that was first issued by Titanic)" seems to be incorrect, with reference to the following: https://timmaltin.com/2019/04/07/titanic-sos-distress-signal/ "FALSE. SOS was probably first used on 10th June 1909, about three years before the Titanic sank, by the Cunard liner SS Slavonia, when she was wrecked off the Azores."