#include <stdio.h>

 #include <string.h>

 #include <malloc.h>

 #define TRUE 1

 #define  FALSE 0

 char *

 strca(char *, char *);

 char *

 join1(char *, char *);

 int

 main(void) {

     char *a = "你好";

     char *b = "de我";

     printf("%s\n", strca(a, b));

 }

 char *

 strca(char *des,  char *src) {

     char *r = (char *)malloc(sizeof(strlen(des)) + sizeof(strlen(src)) + );    //尾部存放'\0'中终止符.

     if(!r) {

         printf("out of memory!\n");

         return FALSE;

     }

     char *tmp = r;    //保存首地址.

 /*    while( *r++ = *des++ )

     */    ;

     while( *des )

         *r++ = *des++;

     while( *r++ = *src++ )

         ;

     return tmp;

 }