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 …
strlen() - keep the length of the string in a variable
Dec 23, 2015 · Good points, Paul and Lloyd. My answer was too brief. I just take it as given that 'strlen ()' doesn't include the terminating null character, and also should have addressed the …
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 …
[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? …
Count number of char of a string or number - Arduino Forum
Mar 6, 2010 · A string is an array of char (bytes), where the last byte is a zero (an actual zero, not an ASCII '0'). "strlen" simply examines each character and if the byte isn't zero, it increments a …
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 …
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
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 - …
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 …
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 …