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strlen() function 1
- Thread starter yasin007
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1
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> How strlen() is working ?
strlen() works by finding a \0 character
> unsigned char xx[2] = "ab";
This does NOT have a \0 character, so strlen() just wanders through memory until it finds one, or the OS steps in and kills your program.
unsigned char xx[3] = "ab";
is what you need as a minimum
unsigned char xx[30] = "ab";
initialises the first 2 chars to ab, and the other 28 to \0
unsigned char xx[] = "ab";
reserves just enough space for the string, and a \0
--
strlen() works by finding a \0 character
> unsigned char xx[2] = "ab";
This does NOT have a \0 character, so strlen() just wanders through memory until it finds one, or the OS steps in and kills your program.
unsigned char xx[3] = "ab";
is what you need as a minimum
unsigned char xx[30] = "ab";
initialises the first 2 chars to ab, and the other 28 to \0
unsigned char xx[] = "ab";
reserves just enough space for the string, and a \0
--
- Thread starter
- #3
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