Implementation of random number output from 0-1 in C language

Text: Output from 0-1 random numbers in C language

this evening classmate asked a big simple question, ask me how to use C language output 0-1 random number, can not say, a moment still can't think out. In the process of writing, it is found that the direct call to the random function is not possible, the following methods can be resolved:#include <stdio.h>#include <time.h>
#include <stdlib.h>
int Main ()
{
int i;
Srand (Time (NULL));
printf ("%lf\n", (double) rand ()/rand_max);
return (0);
}

Implementation of random number output from 0-1 in C language