摘要: #includeint main(void){double R,S; printf("Enter R:\n");scanf("%Lf",&R);if(R<=0)printf("sorry your enter is wrong!\n");else{S=3.1415926*R*R;printf("%.2f",S);}return 0;} 阅读全文
posted @ 2013-10-14 09:33 dihuanting 阅读(147) 评论(0) 推荐(0) 编辑