how do I generate random numbers from 1 to 36 including 00?

Answer 1

use rand()

Answer 2

/* rand example */
#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int main ()
{
int iSecret, iGuess;

srand (time(NULL));

iSecret = rand() % 10 + 1;

do {
printf ("Guess the number (1 to 10): ");
scanf ("%d",&iGuess);
if (iSecret<iGuess) puts ("The secret number is lower");
else if (iSecret>iGuess) puts ("The secret number is higher");
} while (iSecret!=iGuess);

puts ("Congratulations!");
return 0;
}