/******************************************************************************
Welcome to GDB Online.
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*******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
double pseudorand(double max)
{
srand((unsigned) time(0));
return (rand() > RAND_MAX / 2 ? -1 : 1) *(max / RAND_MAX) * rand();
}
int main()
{
printf("%f\n", pseudorand(1000.0));
return 0;
}