Header File 

mem.h, string.h  

Category 

Memory and String Manipulation Routines 

Prototype 

void *memccpy(void *dest, const void *src, int c, size_t n); 

Description 

Copies a block of n bytes. 

memccpy is available on UNIX System V systems. 

memccpy copies a block of n bytes from src to dest. The copying stops as soon as either of the following occurs:

• The character c is first copied into dest.
• n bytes have been copied into dest.

memccpy returns a pointer to the byte in dest immediately following c, if c was copied; otherwise, memccpy returns NULL. 

Example  

#include <string.h>
#include <stdio.h>
int main(void)
{
   char *src = "This is the source string";
   char dest[50];
   char *ptr;
   ptr = (char *) memccpy(dest, src, 'c', strlen(src));
   if (ptr)
   {
      *ptr = '\0';
      printf("The character was found: %s\n", dest);
   }
   else
      printf("The character wasn't found\n");
   return 0;
}

Portability