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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#include <math.h>
double randomNumber() {
int max = 999999;
int min = 100000;
int n = rand() % (max - min + 1) + min;
double u = (double)n/1000000;
printf("u\t%f\n", u);
return u;
}
int main() {
srand(time(0));
randomNumber();
return 0;
}