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package j2me4; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; import javax.microedition.midlet.MIDlet; import javax.microedition.midlet.MIDletStateChangeException; public class J2me4 extends MIDlet { private Display dis; public J2me4() { // TODO Auto-generated constructor stub dis=Display .getDisplay(this); startWel(); } public void startAP(){ AddPhone ap=new AddPhone (this); dis.setCurrent(ap); } public void startPB(){ PhoneBook pb=new PhoneBook (this); dis.setCurrent(pb); } public void startWel(){ Welcome welcom=new Welcome(this); dis.setCurrent(welcom); } protected void destroyApp(boolean arg0) throws MIDletStateChangeException { // TODO Auto-generated method stub } protected void pauseApp() { // TODO Auto-generated method stub } protected void startApp() throws MIDletStateChangeException { // TODO Auto-generated method stub } }

frm=new Form ("小球"); runCommand =new Command("开始",Command .OK,1); exitCommand=new Command ("退出",Command .BACK ,1); pauseCommand =new Command("暂停",Command.OK,1); restCommand =new Command("继续",Command.OK ,1); mc=new MyCanvas(); dis=Display.getDisplay(this); t=new Thread (mc); frm.addCommand(runCommand); frm.addCommand(exitCommand); frm.setCommandListener(this);

C# 课程设计 个人信息管理系统 SQL数据库C# 课程设计 个人信息管理系统 SQL数据库

slr1 编译原理 词法分析slr1 编译原理 词法分析slr1 编译原理 词法分析

清华大学编译原理第二版课后习题答案-056844106edb6f1aff001f59

#include<stdio.h> #include<string.h> #include<stdlib.h> #include<Windows.h> #include"biao.h" char Alp(char a); int s(char m,int n); int F(char bb[]); int B(char bb[]); void main() //void main() { FILE *fp,*fc,*f1,*f2; char Word[50]; char ch=' '; char f='b'; int s1=0,i=0,j=0; int m=0,n=0,k=1; quzx(); fp=fopen("temp.txt","r"); fc=fopen("bb.txt","w"); f1=fopen("变量表","w"); f2=fopen("数据表","w"); while(ch!=EOF) { ch=fgetc(fp); Word[i++]=ch; //putchar(ch); if(ch=='\n') { printf("\n"); k++; } if(Alp(ch)=='0'&&ch!=EOF) { printf("\n第%d行 输入非法字符:%c",k,ch); fseek(fp,1L,1); i--; continue; } //printf("思古"); s1=s(Alp(ch),s1);

import java.io.DataInputStream; public class a2 { public static char change(int m) { char m1[]={'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'}; int i=0; i=m%16; return m1[i]; } public static void main(String args[]) { int m = 0,i=0; char []a=new char [10]; try{ //输入 System.out.print("请输入一个数字:"); DataInputStream ln=new DataInputStream(System.in); String str=ln.readLine(); m=Integer.parseInt(str); }catch(Exception e){} System.out.print(m+"的十六进制数为:");

#include<stdio.h> #include<string.h> int I=0,J=0; int Alphabet(char a); int DFA(char m[]); int F(char bb[]); int B(char bb[]); void main() //void main() is here! { FILE *fp,*fs; char m[40]; //char str[100][40]; int i; if(fopen("bb.txt","r")==NULL) //写入单词符号 { fs=fopen("bb.txt","w"); printf("创建bb.txt\n"); } else fs=fopen("bb.txt","a+"); if(fopen("aa.txt","r")==NULL) //读程序 fp=fopen("aa.txt","w"); else { fp=fopen("aa.txt","rw"); for(i=0;;i++) { fscanf(fp,"%s",m); switch(DFA(m)) //here! here! { case 1: printf("(%s,-)\n",m); //关键字 fprintf(fs,"(%s,-)",m); break; case 2: printf("(%s,rlop)\n",m); //比较 fprintf(fs,"(%s,rlop)",m); break; case 3: printf("(%s,-)\n",m); //其他 fprintf(fs,"(%s,-)",m); break; case 4: printf("(%s,-)\n",m); //前五个关键字 fprintf(fs,"(%s,-)",m); break; case 5: //注释 //printf("注释：%s\n",m); break; default : //定义变量 switch(B(m)) { case 1: printf("(%s,%d)\n",m,I++); fprintf(fs,"(%s,%d)",m,I); break; case 2: printf("(%s,%d)\n",m,J++); fprintf(fs,"(%s,%d)",m,J);break; default: printf("错误的定义");break; } }

#include #include #include #pragma comment(lib,"rasapi32.lib") #include #include int tr(char d[16]) { RASDIALPARAMS respara; respara.dwSize=sizeof(RASDIALPARAMS); strcpy(respara.szEntryName,"宽带连接"); //连接名称 strcpy(respara.szPhoneNumber,""); strcpy(respara.szCallbackNumber,""); strcpy(respara.szDomain,""); strcpy(respara.szUserName,d); //用户名 strcpy(respara.szPassword,"000000"); //密码 //puts(a); HRASCONN rasconn=NULL; RASCONN Rasconn; DWORD lpcb; DWORD LRasconn; Rasconn.dwSize=sizeof(RASCONN); lpcb=sizeof(RASCONN); RasEnumConnections(&Rasconn,&lpcb,&LRasconn); RasHangUp(Rasconn.hrasconn); //挂断 //Sleep(400);

程序必需放入一个进程，并且送入内存才能被执行 多道程序设计 共享CPU => CPU 调度 共享内存 => 内存管理 内存由很大一组字或字节所组成，每个字或字节都有自己的地址 输入队列— 磁盘上等待进入内存并执行的进程的集合

#include<iostream> #include<fstream> #define MAXMSIZE 99 using namespace std; struct Node{ int startAddress; char name; int size; int endAddress; struct Node *prior; struct Node *next; }; struct Blocklist { Node* head; }; Blocklist* freelist=new Blocklist; Blocklist* busylist=new Blocklist; void initial(); void allocateBlock(); void print(); void reclaimBlock(); void main() { int slct; initial(); print(); cout<<"select allocetion (1) or reclaim (2):"<<endl; slct=1; while(slct) { cin>>slct; switch( slct ) { case 1: allocateBlock(); print(); break; case 2: reclaimBlock(); print(); break; default: break; } } }

Linux操作系统分析与实践第五讲：文件管理

001 #include 002 #include 003 #include 004 #include 005 #include 006 #include 007 008 // ******************目录和文件的结构定义****** 009 typedef struct node{ 010 char name[50]; /*目录或文件的名字*/ 011 int type; /*0代表目录，1代表普通文件*/ 012 struct node *next; /*指向下一个兄弟结点的指针*/ 013 struct node *sub; /*指向第一个子结点的指针*/ 014 struct node *father; /*指向父结点的指针*/ 015 016 int size; /*如果是文件则表示文件的大小*/ 017 018 }dirNode; 019 020 dirNode *workDir; //定义当前工作目录 021 dirNode root; //定义根目录