about srand()

Hello,

Anyone can help me how to use srand() in generate random
number ? And how exactly do?

Example

/* RAND.C: This program seeds the random-number generator
* with the time, then displays 10 random integers.
*/

#include <stdlib.h>
#include <stdio.h>
#include <time.h>

void main( void )
{
int i;

/* Seed the random-number generator with current time so that
* the numbers will be different every time we run.
*/
srand( (unsigned)time( NULL ) );

/* Display 10 numbers. */
for( i = 0; i < 10;i++ )
printf( " %6d\n", rand() );
}


Output

6929
8026
21987
30734
20587
6699
22034
25051
7988
10104

and another thing , you are supposed to call srand just once before making calls to rand() , dont call srand before every call to rand in the hope of getting better random numbers

Ok, it's fine.
Thank you. ^^