box-o-sand/ex24_iofunctions05.c

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#include <stdio.h>
#include "dbg.h"
int main(int argc, char *argv[])
{
FILE *fp;
char *filename;
check(argc == 2, "You must provide a filename for redirecting stdout.");
filename = argv[1];
fp = freopen(filename, "w", stdout);
check(fp != NULL, "Failed to reopen stdout as \"%s\"", filename);
printf("This should be written to the file you specified!\n");
return 0;
error:
return 1;
}