Just to clarify a bit what "C has them" means; the standard library string-to-float parsing function strtof() [1] support this format. You can also use them as

Just to clarify a bit what "C has them" means; the standard library string-to-float parsing function strtof() [1] support this format. You can also use them as floating-point literals in your code. [1]: https://linux.die.net/man/3/strtof https://linux.die.net/man/3/strtof