#include <stdio.h>
char *strc(char *dest,char *src)
{
if ((dest!=NULL)&&(src!=NULL))
{
char *cpdest=dest;
while((*dest++=*src++)!='');
return cpdest;
}else
{
return "error";
}
}

int main(void)
{
char *pp1;
char p[30];
pp1=strc(p,"cfxdfasdf12345");
printf("%snreturn:%sn",p,pp1);

}

GCC-4.1.2通过测试