#include <stdio.h>
#include <string.h>

char *tmp_name(void)
{
static char name[30];
static int sequence = 10;

static char hoge[3];

sprintf(hoge,"%d",sequence);

strcat(name,"tmp");
strcat(name,hoge);

return (name);

}

int main()
{
char *tmp_name(void);

printf("%s\n", tmp_name());

return (0);
}