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strcpy and strncpy and strrncpy

David Shang

"Keil C51 is very good"

strncpy can Get sub str from Left.

I want to get "very good".

Is there a function "strrncpy" to uses ?

Parents
  • 0 in reply to J Guy

    If you want the n rightmost bytes of a string, it's easy to code yourself on top of the existing ANSI C string functions.

    char* strrncpy (char* dst, const char* src, int n)
   {
   return strncpy (dst, src + strlen(src) - n, n);
   } // strrncpy

    You might want to add an error check for n > strlen(src).

Reply
  • 0 in reply to J Guy

    If you want the n rightmost bytes of a string, it's easy to code yourself on top of the existing ANSI C string functions.

    char* strrncpy (char* dst, const char* src, int n)
   {
   return strncpy (dst, src + strlen(src) - n, n);
   } // strrncpy

    You might want to add an error check for n > strlen(src).

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