摘要: #includeint main(void){ double R,S; printf("Enter R:"); scanf("%lf",&R); if(R>0){ S=R*R*3.14; printf("%.2f",S); } else printf("error"); return 0;} 阅读全文
posted @ 2013-10-14 14:36 zhaoyang16 阅读(97) 评论(0) 推荐(0) 编辑