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#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
int
main(void) {
int i, j, k, l;
/* templateish form used so it's obvious that it's long enough */
char name[] = "dir_%d/dir_%d/%d%d.txt";
for (i = 0; i < 10; ++i) {
snprintf(name, sizeof(name), "dir_%d", i);
mkdir(name, 0755);
for (j = 0; j < 40; ++j) {
snprintf(name, sizeof(name), "dir_%d/dir_%d", i, j);
mkdir(name, 0755);
for (k = 0; k < 10; ++k) {
for (l = 0; l < 10; ++l) {
FILE *fp;
snprintf(name, sizeof(name),
"dir_%d/dir_%d/%d%d.txt",
i, j, k, l);
fp = fopen(name, "w");
if (fp) {
fprintf(fp, "dummy file.\n");
fclose(fp);
}
}
}
}
}
return 0;
}
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