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哥们儿谢过,借你码改的。。。越来越懒……In Reply To:OLE 什么意思 帮帮忙<附原码> Posted by:d4114 at 2007-05-05 22:49:07 #include <stdio.h> #include<math.h> int main() { double x[4],y[4]; while(scanf("%lf%lf%lf%lf%lf%lf%lf%lf",&x[0],&y[0],&x[1],&y[1],&x[2],&y[2],&x[3],&y[3])!=EOF) { int mi=-1; for(int i=0;i<4;i++) { for(int j=i+1;j<4;j++) if(fabs(x[i]-x[j])<1e-8&&fabs(y[i]-y[j])<1e-8) { mi=i; break; } if(mi!=-1) break; } double hx=x[0]+x[1]+x[2]+x[3],hy=y[0]+y[1]+y[2]+y[3]; hx-=2*x[mi],hy-=2*y[mi]; printf("%.3f %.3f\n",hx-x[mi],hy-y[mi]); } } Followed by:
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