难忘的一件事作文童年五一

请问c++怎么设置输出的小数位数,帮帮忙?我每次一用setprecision(),输出的就变成科学记数法了,可是我需要的是小数,小数点后保留四位. C+ +程序,限制输入长度,保留小数位数1.设圆半径r=1.5,圆柱高h=3,圆柱体积v 用cin输入数据,输出计算结果,输出时要求有文字说明,输出长度为setw（10）,取小数点后2位数字,右对齐. sos sos 帮我找三首诗词sos sos 帮我找三首诗词完整的 吴中四友 指哪几个人. 书法四友音乐四友爱好四友文学四友指的是什么 文人四友指? 我现在在苏州吴中,可是吴中这里电子厂很少,我听说园区的电子厂多,离吴中有多远啊 花中四友指的是哪四种花? 关于草原绿色的词除了一碧千里,翠色欲流!（急） 关于草原的诗句越多越准确越好! 过了这么多年,藤萝又开花了,而且开得这样盛,这样密.第一段中加点词“这样”,具体指的是什么样? 初一《紫藤萝瀑布》“过了这么多年,藤萝又开花了”的含义 急 紫藤萝瀑布 过了这么多年,藤萝又开花了,而且开得这样盛,这样密,紫色的瀑布遮住了粗.......加点字中“这样”,具体指的是什么样? “过了这么多年,紫藤有开花了”的含义是什么? Who's that old man?怎么答 Is Tina that old man's g_____? 魔兽世界稀有精英刷新点我想知道所有等级的稀有精英刷新点以及掉落的物品. wow5.4武僧治疗怎么样, 苏教版15课《草原》教学提纲 16.草原如果让你当导游,你会整如果让你当导游,你会怎样向游客们介绍草原风光?请列举3个提纲 如果你是导游,你会怎样向游客们介绍草原风光?请你列个简要提纲 如果让你当导游,你会怎样向游客们介绍草原风光?请你列个简要提纲 如果让你当导游,你会怎样向游客们介绍草原风光?请你列简要提纲 英语：1.什么时候用decide to什么时候用decided to?2.什么时候用plan to,什么时候用planning to?Ben Lambert's Vacation Plans!Ben Lambert,the famous French singer,is taking a long vacation this summer!He thought about going to Greece Where are you planning to spend your winter vacation?I__(decided)yet,but I__(consider) going toHangzhou with mu family SOS!谁有这十首诗的解释?)1:山中杂诗(吴均)___山际见来烟^^^^^^^^^^^^2:竹里馆(王维)_____独坐幽篁里^^^^^^^^^^^^3:峨眉山月歌(李白)_____峨眉山月半轮秋^^^^^4:春夜洛城闻笛(李白)_____谁家玉笛暗飞声^^^^ sos~“此情可待成追忆”全诗 The Town Hall____ in the 1800's was the most distinguished building at that time.A to be completed B having been completedC completed D being completed [-A77] The Town Hall _____ in the 1800's was the most distinguished building at the time.A.to be completed B.having been completed C.completed D.being completed 翻译并分析 *62.The Tome Hall _____ in the 1880's was the most distinguished building at the time.A.to be completedB.having been completedC.completedD.being completed翻译并 分析句子. the temple ______in song dynasty was the most distinguished building at that timeA:to be completed B:having been completed C:completed D:being completed 诗人修改古诗的故事