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1) c_str() is no replacement for toCharArray(): your first example fails to compile with “error: invalid conversion from ‘const char*’ to ‘char*’”. Of course, if you only need a const char *, then c_str() is to be preferred. 2) In terms of code size, snprintf() is a very inefficient way of copying a string. 3) No need to subtract one from sizeof(buf) in the second argument to snprintf().

Edgar Bonet
– Edgar Bonet

2017-03-20 18:46:08 +00:00
Commented Mar 20, 2017 at 18:46

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