rand的用法.txt

都是自己编写的常用算法的事例,本人础作. 里面有:哈密尔顿环,皇后问题,图的着色问题,子集和数问题,树和等价问题,栈的各种用发等.

// crt_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>

int 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() );