本周学习内容20211029

一. C语言学习

第12章文件相关代码

文件的读写及更改

二. python学习

逻辑运算位运算 class类定义创建和使用对象字符串处理循环结构

三. html初学

了解了html相关的结构

笔记

一、基本标签

内部标签说明
</td><td>定义网页的标题</td></tr><tr><td><meta></td><td>定义网页的基本信息（供搜索引擎）</td></tr><tr><td><sty1e></td><td>定义CSS样式</td></tr><tr><td><link></td><td>链接外部CSS文件或脚本文件</td></tr><tr><td><script></td><td>定义脚本语言</td></tr><tr><td><base></td><td>定义页面所有链接的基础定位（用得很少）</td></tr></tbody></table> <p>二、段落与文字</p> <ol><li> <p>段落标签</p> <ol><li> <p>段落与文字标签</p> <ol><li> <p>标题</p> <pre class='brush:php;toolbar:false'> 标题 </pre> <pre class='brush:php;toolbar:false'> 标题 </pre> </li><li> <p>段落</p> <pre class='brush:php;toolbar:false'><p> 段落 </p></pre> </li><li> <p>换行</p> <pre class='brush:php;toolbar:false'><br></pre> </li><li> <p>水平线</p> <pre class='brush:php;toolbar:false'><hr></pre> </li><li> <p>分割（块元素）</p> <pre class='brush:php;toolbar:false'> 123 </pre> </li><li> <p>区域<行内元素></p> <pre class='brush:php;toolbar:false'>123</pre> </li></ol></li><li> <p>文本格式化标签</p> <ol><li> <p>加粗</p> <pre class='brush:php;toolbar:false'>123</pre> </li><li> <p>斜体（强调）</p> <pre class='brush:php;toolbar:false'><em>123</em></pre> </li><li> <p>斜体（引用）</p> <pre class='brush:php;toolbar:false'><cite>123</cite></pre> </li><li> <p>上标</p> <pre class='brush:php;toolbar:false'><sup>123</sup></pre> </li><li> <p>下标</p> <pre class='brush:php;toolbar:false'><sub>123</sub></pre> </li></ol></li></ol></li><li> <p>特殊符号</p> <p>HTML 网页特殊符号代码大全_青颜的天空的博客-CSDN博客</p> <p> </p> </li></ol> </blockquote> 四. 实践 <p></p> <p></p> <pre class='brush:php;toolbar:false'>#include <stdio.h> int main(){ int n,l=0,b=0,d=0,o=0; char ch; scanf("%d",&n); getchar(); for(int i=1;i<=n;i++){ ch=getchar(); if(ch>='a'&&ch<='z'||ch>='A'&&ch<='Z') l++; else if(ch=='n'||ch==' ') b++; else if(ch>='0'&&ch<='9') d++; else o++; } printf("letter = %d, blank = %d, digit = %d, other = %d",l,b,d,o); return 0; } </pre> <p> </p> <p></p> <p></p> <pre class='brush:php;toolbar:false'>#include <stdio.h> int main(){ int t,a,b; double c; scanf("%d",&t); for(int i=0;i<t;i++){ scanf("%d",&a); b=(a-1)/10000; switch(b){ case 6:case 7:case 8:case 9:c=(a-60000)*0.015+10000*0.1+10000*0.075+20000*0.05+20000*0.03;break; case 5:case 4:c=(a-40000)*0.03+10000*0.1+10000*0.075+20000*0.05;break; case 3:case 2:c=(a-20000)*0.05+10000*0.1+10000*0.075;break; case 1:c=(a-10000)*0.075+10000*0.1;break; case 0:c=a*0.1;break; default:c=(a-100000)*0.01+10000*0.1+10000*0.075+20000*0.05+20000*0.03+40000*0.015;break; } printf("%.0fn",c); } return 0; } </pre> <p> </p> <pre class='brush:php;toolbar:false'>#include <stdio.h> #include <math.h> int main(){ float a,b,c; scanf("%f%f%f",&a,&b,&c); if(a+b>c&&a+c>b&&b+c>a){ if(fabs(a-b)<0.001&&fabs(a-c)<0.001) printf("等边三角形"); else if(fabs(a-b)<0.001||fabs(a-c)<0.001||fabs(b-c)<0.001){ if(fabs(a*a+b*b-c*c)<0.001||fabs(b*b+c*c-a*a)<0.001||fabs(a*a+c*c-b*b)<0.001) printf("等腰直角三角形"); else printf("等腰三角形"); } else printf("普通三角形"); }else printf("非三角形"); return 0; } </pre> <p> </p> <p></p> <pre class='brush:php;toolbar:false'>#include <stdio.h> #include <math.h> int main(){ int a,b,c,t=0,x=28; scanf("%d %d %d",&a,&b,&c); if(a%4==0&&a%100!=0||a%400==0) x=29; switch(b){ case 1:t+=x; case 2:t+=31; case 3:t+=30; case 4:t+=31; case 5:t+=30; case 6:t+=31; case 7:t+=31; case 8:t+=30; case 9:t+=31; case 10:t+=30; case 11:t+=31;break; } switch(b){ case 1:case 3:case 5:case 7:case 8:case 10:case 12:t+=(31-c);break; case 2:t+=(x-c);break; default:t+=(30-c);break; } printf("%d",t); return 0; } </pre> <pre class='brush:php;toolbar:false'>#include <stdio.h> int main(){ int m[12]={31,28,31,30,31,30,31,31,30,31,30,31}; //初始化月份天数 int a,b,c,days; scanf("%d %d %d",&a,&b,&c); if(a%4==0&&a%100!=0||a%400==0) //判断闰年 m[1]=29; days=m[b-1]-c; //当月剩余天数 for(int i=b;i<12;i++){ //剩余月份天数 days+=m[i]; } printf("%d",days); return 0; } </pre> <p></p> <pre class='brush:php;toolbar:false'>#include <stdio.h> #include <math.h> int main(){ double a,b,c,dt,x1,x2; scanf("%lf %lf %lf",&a,&b,&c); dt=b*b-4*a*c; if(a==0&&b==0&&c==0){ printf("Zero Equation"); }else if(a==0&&b==0&&c!=0){ printf("Not An Equation"); }else if(a==0){ x1=-c/b; printf("%.2f",x1); }else if(b==0){ if(dt>0){ x1=sqrt(-c/a); x2=-sqrt(-c/a); printf("%.2fn%.2f",x1,x2); }else if(dt==0){ x1=0.0; printf("%.2f",x1); }else{ x1=sqrt(c/a); printf("0.00+%.2fin0.00-%.2fi",x1,x1); } }else{ if(dt>0){ x1=(-b+sqrt(dt))/(2*a); x2=(-b-sqrt(dt))/(2*a); printf("%.2fn%.2f",x1,x2); } else if(dt==0){ x1=-b/(2*a); printf("%.2f",x1); } else if(dt<0){ x1=-b/(2*a); x2=sqrt(-dt)/(2*a); printf("%.2f+%.2fin%.2f-%.2fi",x1,x2,x1,x2); } } return 0; } </pre> 五. 计划 <p>计划更深入学习python以及html css javascript相关内容以及mysql数据库</p></div> </div> <div style="clear: both;"></div> <div class="author-info fl"> <div><span class="gray">转载请注明：</span>文章转载自 <a href="https://www.mshxw.com/" class="blue">www.mshxw.com</a></div> <div><span class="gray">本文地址：</span><a href="https://www.mshxw.com/it/357155.html" class="blue">https://www.mshxw.com/it/357155.html</a></div> </div> <div class="prev fl"> <p> <a style='text-align:left;' class='center-block text-center glyphicon glyphicon-collapse-down' 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