#include <stdio.h>
int main(int argc, char *argv[])
{
    FILE *fp = fopen("thisisatest.txt", "w+");
    if (!fp) {
        perror(argv[0]);
        return 1;
    }
    fputs("I'm SURE this is blocked, but...", fp);
    fclose(fp);
    return 0;
}