[Solved]substr() for char *
Author
Is there a function similar to the Cstring substr() function for char * ??
This is what the function should do:
subchar(const char * , start,length) //prototype
return a substring fromchar * start at position <start> and with the length <length>
example:
char * temp="test";
char * temp2 = subchar(temp,1,2);
printf(temp2);
does a similar function exist in c++ for char *??
[Edited by - Aidamina on December 3, 2005 6:10:57 AM]
I assume you're using plain C:
const char temp[] = "test";
const char substring[10] = { 0 };
strncpy(substring, &temp[1], 2)
printf(substring);
If you're using C++ then Trap's solution is the best.
const char temp[] = "test";
const char substring[10] = { 0 };
strncpy(substring, &temp[1], 2)
printf(substring);
If you're using C++ then Trap's solution is the best.
Quote:Original post by ZQJ
std::string(temp+start, length)
That's a bit faster than my version, especially if you only need a small part of the string and it works with char* that are not properly \0-terminated.
Quote:Original post by ZQJ
std::string(temp+start, length)
Just had a thought - if temp is not NULL terminated then the string MUST be longer than start+length; if it is NULL terminated the string must be longer than start otherwise this will break, where Trap's version won't.
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