Generate & store random data in a file. Designed to create a large random file to use as a key file for TrueCrypt.

randFile.c

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int main(int argc, char* argv[] ) {
    if (argc != 3) {
		printf("Error, you must provide a destination file and number of iterations\n");
		return -1;
	}
	FILE *fp;
	int i = 0;
	srand(time(NULL));
	const int iters = atoi(argv[2]);
	printf("Writing %d number of times...\n", iters);
	fp = fopen(argv[1], "w");
	for(i = 0; i < iters; i++) {
        int d = rand();
        int s = rand() % 2;
        d = d << s;
        s = d % 100;
        d = d / 2;
		fwrite(&d, sizeof(d), 1, fp);
		fwrite(&s, sizeof(s), 1, fp);
		//printf("Writing: %d %d\n", d, s);
	}
	fclose(fp);
	return 0;
}