好像是个例题哦

是习题,没答案啊

如果换我我就直接下手去抓饭，免得饿死。
呵呵！开个玩笑而已。以下是解决哲学家温饱问题的源码。

#include <stdio.h>
#include <stdlib.h>
#define SizeArray 5

typedef struct {int value;}Key;
typedef struct
{
       int left;
       int right;
       int busy;
}Man;

int getkey( int *blpKey, int *blpMan, int *blpBusy )
{
       if( *blpKey )
       {
              if(*blpMan)       {     return 0;    }
              else               {     return 1;    }
       }
       else
       {
              *blpMan = 1;
              *blpKey = 1;
              ++(*blpBusy);
              return 1;
       }

}
Man       aMan[SizeArray];
Key       aKey[SizeArray];

#define NextAp          ((ap+SizeArray+1)%SizeArray)

#define DGetRight(ap,NextAp)       getkey( &(aKey[NextAp].value), \
                                            &(aMan[ap].right),       \
                                        &(aMan[ap].busy))
/*上边的 \不是 / ！*/
#define DGetLeft(ap,NextAp)        getkey( &(aKey[NextAp].value), \
                                        &(aMan[ap].left),      \
                                        &(aMan[ap].busy))
int count;
int main( void )
{
    int ap;
       int i;
       /*for( i=0 ; i < SizeArray ; ++i )
       {
              aMan[i].left = 0;
              aMan[i].right= 0;
              aMan[i].busy = 0;
              aKey[i].value= 0;
       }
   */
       /* test 1000 no. */
       for( i=0; i<1000; ++i )
       {
              ap = rand() % SizeArray ; /*SizeArray = 5 ..this */
              if ( aMan[ap].busy == 2 ) /* had 2 key ,down all !! */
              {
                     ++count; /*record had thing to eating */
                     aMan[ap].left = 0;
                     aMan[ap].right= 0;
                     aMan[ap].busy = 0;
                     aKey[ap].value     = 0;
                     aKey[NextAp].value = 0;

              }
              else
              {
                     if( ap % 2 )
                     {
                            if ( DGetRight(ap,ap) )    { continue;}
                            else{        DGetLeft(ap,NextAp) ;continue;}

                     }
                     else
                     {
                            if ( DGetLeft(ap,NextAp))  { continue;}
                            else{       DGetRight(ap,ap) ;continue; }
                     }
              }
       } /*end for.. */
       printf("dream : test = %d : %d ",500,count);
       return 0;
}   /*end main..*/

[em1]

ＴＨＡＮＫ　ＹＯＵ