strlen() - keep the length of the string in a variable
Dec 23, 2015 · How can i keep the length of the string in a variable? for exemple: strlen (name); And then i want to save that number. how can i do that?
STRLEN() doesnt return a expected number - Arduino Forum
Dec 13, 2024 · I know this function cant go wrong so I must be doing something wrong. bool newData = true; char *AXpos; char *EYpos; const char *delimiter = ","; //char inData[numChars]; // an array to …
The strnlen () C Function Is Not Available - Arduino Forum
Jun 28, 2023 · The strlen () function is defined, but the strnlen () function is not defined. Anybody know why this is the case and perhaps how to fix it? jremington June 28, 2023, 10:20pm 2
Sizeof with char* - Programming - Arduino Forum
May 3, 2021 · I'm using sizeof and strlen. With the char* strings I get back the right number from strlen, but it always kicks back "2" from sizeof. Doing the same with a string - that doesn't use char* - I get …
[SOLVED] VirtualWire and const char * msg - Arduino Forum
Jan 29, 2016 · In the transmitter example for VirtualWire, the message being sent is declared as const char *msg = "hello"; But what do I do if I want be flexible in the message I am sending? What if I want …
cannot convert 'String' to 'const char*' for argument '1' to 'size_t ...
Jan 12, 2013 · cannot convert 'String' to 'const char*' for argument '1' to 'size_t strlen (cons Projects Programming system January 12, 2013, 5:50pm
strlen and PROGMEM - Programming - Arduino Forum
Jan 4, 2020 · strlen_P(reinterpret_cast<const char *>(text)) Reinterpret_cast is dangerous, and can only be used in a very limited number of cases: reinterpret_cast conversion - cppreference.com In this …
Question about size_t and strlen () - Arduino Forum
Jan 8, 2021 · strlen () is very different than sizeof: sizeof is part of the language, it gives you the number of bytes allocated for a variable. strlen () is a function call, part of the many standard libraries of C …
Sizeof one strings in an 2D array - Arduino Forum
Apr 26, 2010 · The strlen function counts the number of non-NULL values in the array, before the first NULL. By convention NULL is the value of a pointer. It is only a convention, but so are words in all …
Trying to understand const char usage - Arduino Forum
Jan 6, 2018 · I am in that precarious position of "having a little knowledge is dangerous" ! This pertains to a code snippet from the VirtualWire library which i'm trying to comprehend. This simple line; const …