tst_strncat.c

KEILC51程序实例和配套硬件目标板,很详细,程序有注释

#include <string.h>
#include <stdio.h>                  /* for printf */
void tst_strncat (void) {
   char buf [21];
   strcpy (buf, "test #");
   strncat (buf, "three", sizeof (buf) - strlen(buf));
}