徐士良写的《数值分析与算法》

				
				    #include "stdio.h"
				    #include "math.h"
				    #include "stdlib.h"
				    void  queen(int n)
				    { int  i,j,k,jt,*q;
				      q=malloc(n*sizeof(int));
				      for(i=0; i				      i=0; jt=1;
				      printf("\n");
				      printf("%d queen problem\n",n);
				      while(jt==1)
				        { if (q[i]				            { k=0;
				              while((k				                    (fabs(q[k]-q[i])-fabs(k-i)))!=0)  k=k+1;
				              if (k				              else
				                { if (i==n-1)
				                    { for(j=0; j				                         printf("%5d",q[j]+1);
				                      printf("\n");
				                      q[n-1]=q[n-1]+1;
				                    }
				                  else  i=i+1;
				                }
				            }
				          else
				            { q[i]=0;  i=i-1;
				              if (i				                { printf("\n");  free(q); return; }
				              q[i]=q[i]+1;
				            }
				        }
				    }