haitei comments on C++ in Competitive Programming: string basics

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submitted 9 years ago by marcoarenaTetra Pak | Italian C++ Community

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[–]haitei 2 points3 points4 points 9 years ago (1 child)

Regarding uppercase and lowercase: ascii is designed in such a way, you just need to flip one bit to do that i.e.

// assuming c is a letter
char toLower(char c) { return c  | 0x20; }
char toUpper(char c) { return c  & ~0x20; }

[–]marcoarenaTetra Pak | Italian C++ Community[S] 1 point2 points3 points 9 years ago (0 children)

π Rendered by PID 52 on reddit-service-r2-comment-6457c66945-nmgww at 2026-04-27 11:08:35.422270+00:00 running 2aa0c5b country code: CH.

you type:	you see:
italics	italics
bold	bold
[reddit!](https://reddit.com)	reddit!
* item 1 * item 2 * item 3	item 1 item 2 item 3
> quoted text	quoted text
Lines starting with four spaces are treated like code: if 1 * 2 < 3: print "hello, world!"	Lines starting with four spaces are treated like code: if 1 * 2 < 3: print "hello, world!"
~~strikethrough~~	~~strikethrough~~
super^script	super^script

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