S += (文字列);
S += (文字);
S.size()
S.substr( l ) ( l ~ 最後 の部分文字列)
S.substr( l, r ) ( l ~ l+r-1 の部分文字列)
More than 1 year has passed since last update.
Register as a new user and use Qiita more conveniently
- You get articles that match your needs
- You can efficiently read back useful information
- You can use dark theme