Redirecting a standard stream

/* 2204.c: Redirecting a standard stream */
#include <stdio.h>

enum {SUCCESS, FAIL,
STR_NUM = 4};

void StrPrint(char **str);
int ErrorMsg(char *str);

main(void)
{
char *str[STR_NUM] = {
"Be bent, and you will remain straight.",
"Be vacant, and you will remain full.",
"Be worn, and you will remain new.",
"---- by Lao Tzu"};
char filename[]= "LaoTzu.txt";
int reval = SUCCESS;

StrPrint(str);
if (freopen(filename, "w", stdout) == NULL){
reval = ErrorMsg(filename);
} else {
StrPrint(str);
fclose(stdout);
}
return reval;
}
/* function definition */
void StrPrint(char **str)
{
int i;

for (i=0; i<STR_NUM; i++)
printf("%s\n", str[i]);
}
/* function definition */
int ErrorMsg(char *str)
{
printf("Cannot open %s.\n", str);
return FAIL;
}