函数名: memccpy 
 功  能: 从源source中拷贝n个字节到目标destin中 
 用  法: #include <stdio.h> 
         void *memccpy(void *destin, void *source, unsigned char ch,  unsigned n); 
 程序例: 
#include <string.h> 
 #include <stdio.h> 
int main(void) 
 { 
    char *src = "This is the source string"; 
    char dest[50]; 
    char *ptr; 
ptr = 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; 
 }