关于我最喜欢的城市的英语作文150字

我最喜欢的城市(my favourite city) Shanghai is my favorite city. I like it because I was born in there, and a lot of my family members and my friends live there. The shopping in Shanghai is cheaper than here, but it’s expensive in China. I have a lot of things to do there, like: shopping, playing, going to my friend’s home… And there’re also a lot of places that are interesting. In Shanghai, people speak the same language as I do. I was there for 13 years! I left there on August, 18th, 2005. And I was there because I was born in there and I lived there. There’re a lot of people in Shanghai. The people are like me. We all speak the same language. The people in Shanghai are busy and friendly. And Shanghai is also and international city. It’s beautiful and fancy. There’re a lot of tall buildings. That’s why Shanghai is my favorite city. It’s my home city. I love Shanghai!!! I’d like to go back to Shanghai, but just for a visit. Although Shanghai is good, I’d like to live here because I’d like to study here. I only get a little homework and the air here is flasher than Shanghai. The weather is hot in Shanghai. And the best time of year to go there is spring, because in spring, the weather is cool and warm. But some people asked me:” Why don’t we go there in the fall? The fall is also cool and warm.” I don’t think so, because in Shanghai, the fall is still very hot. I’d like to recommend this place to other because I want more and more people to know and visit my hometown. I hope if I ask my friends:” Have you ever been to Shanghai? Do you like Shanghai?” The answers shouldn’t be:” No, I haven’t been to Shanghai. And I don’t even know anything about Shanghai!” Now, I’ll recommend you to go to visit Shanghai in summer vacation or winter vacation or spring break or every time you’d like, you’d want, because Shanghai is a very nice city. If you go there, you’ll soon like it!

c语言，，!x与x!分别表示什么意思

C语言中只有!x没有x!。

!x的意思就是x!=0；当X=0时执行while循环；

！即取反，当x！=0时不执行；若x=0，则!x非零；

若x不等于零，则!x=0；一般用if(!x)来做判断式。

c语言，输入长方形的长和宽,计算长方形的周长和面积,并输出,输出结果保留2位小数

代码如下：
#include<stdio.h>
int main()
{
float a,b,c,d;
scanf("%f %f",&a,&b);//输入长和宽
c=a*b;
d=2*(a+b);
printf("S=%.2f  L=%.2f ",c,d);//S是面积，L是周长
return 0;
}


扩展资料：
C语言是一门通用计算机编程语言，广泛应用于底层开发。C语言的设计目标是提供一种能以简易的方式编译、处理低级存储器、产生少量的机器码以及不需要任何运行环境支持便能运行的编程语言。
尽管C语言提供了许多低级处理的功能，但仍然保持着良好跨平台的特性，以一个标准规格写出的C语言程序可在许多电脑平台上进行编译，甚至包含一些嵌入式处理器（单片机或称MCU）以及超级电脑等作业平台。
二十世纪八十年代，为了避免各开发厂商用的C语言语法产生差异，由美国国家标准局为C语言制定了一套完整的美国国家标准语法，称为ANSI C，作为C语言最初的标准。[1] 目前2011年12月8日，国际标准化组织（ISO）和国际电工委员会（IEC）发布的C11标准是C语言的第三个官方标准，也是C语言的最新标准，该标准更好的支持了汉字函数名和汉字标识符，一定程度上实现了汉字编程。
C语言是一门面向过程的计算机编程语言，与C++，Java等面向对象的编程语言有所不同。

怎么用C语言编程设计“输入长方形的长和宽，求长方形的面积”的程序

需要准备的材料分别有：电脑、C语言编译器。
1、首先，打开C语言编译器，新建一个初始.cpp文件，例如：test.cpp。

2、在test.cpp文件中，输入C语言代码：
int l, w;scanf("%d%d", &l, &w);printf("长方形的面积=%d ", l * w);

3、编译器运行test.cpp文件，此时输入长和宽会求出长方形的面积。

计算机网络分为局域网城域网广域网属于局域网的是？（）a chinaDDN网 b Novell网 c chinanet网 d intemet

属于局域网的是b Novell网。

chinaDDN网是中国公用数字数据网，属于广域网。Novell网是局域网的一种，是局部小范围使用的。chinanet网是邮电部门经营管理的基于Internet网络技术的中国公用计算机互联网。intemet也作internet，属于互联网，是计算机网络的集合，既不是广域网，更不是城域、局域网。
扩展资料：
计算机网络的分类
计算机网络是按照覆盖的地理范围进行分类，计算机网络可以分为局域网、城域网和广域网三类。 
1、局域网(LAN)：局域网是一种在小区域内使用的，由多台计算机组成的网络，覆盖范围通常局限在10 千米范围之内，属于一个单位或部门组建的小范围网。
2、城域网(MAN)：城域网是作用范围在广域网与局域网之间的网络，其网络覆盖范围通常可以延伸到整个城市，借助通信光纤将多个局域网联通公用城市网络形成大型网络，使得不仅局域网内的资源可以共享，局域网之间的资源也可以共享。 
3、广域网(WAN) ：广城网是一种远程网，涉及长距离的通信，覆盖范围可以是个国家或多个国家，甚至整个世界，由于广域网地理上的距离可以超过几千千米，所以信息衰减非常严重，这种网络一般要租用专线，通过接口信息处理协议和线路连接起来，构成网状结构，解决寻径问题。
参考资料来源：搜狗百科——计算机网络分类

自然科学的优势英语作文

Nowadays,the science technology in our country China is more and more developed. We can buy ourselves many digital things and enjoy them. With the science technology,we are convenient to live in the world. Also, our life becomes more beautiful and comfortable. As a student, I should study hard. When I grow up,I will make contribute to people in the world. My favorite class is nature science, I believe in nearly future , I brought us many benefit in the nature science area.