#include<stdio.h>
#include<stdlib.h>
int main(void) {
int num, occ, arr;
FILE *fp;
fp = fopen("data.io", "w");
for (num = 0, occ = 0; num < 100; num++, occ += 10) {
arr = occ + 20 + (double)rand() / RAND_MAX * 10 + 1;
fprintf(fp, "%d\t%d\t%d\n", num, occ, arr);
}
fclose(fp);
return 0;
}