labcvi文件和端口编程课件

LabWindows/CVI教程(5)文件和端口操作Email:(交作业）

MSN:（在线交流）Tel:86413532ext.8611（逸夫楼611）3/14/2023字符串操作FormattingandI/O－StringManipulationStringLengthint

StringLength(charString[]);i=StringLength(str);StringLowerCasevoidStringLowerCase(charString[]);StringLowerCase(str);StringUpperCaseCompareStringint

CompareStrings(charString_#1[],intString_#1_Index,charString_#2[],intString_#2_Index,int

Case_Sensitive?);i=CompareStrings(str1,ind1,str2,ind2,0);CopyString……3/14/2023Programmer’sToolbox－StringHandlingAppendStringintAppendString(char**Pointer_To_String_To_Append_To,constcharString_To_Append[],intNum_Characters_To_Append);AppendString(str1,str2,-1);StrDupchar*StrDup(constcharString_To_Duplicate[]);str=StrDup("virtualinstrumentationlesson");RemoveSurroundingWhiteSpacevoidRemoveSurroundingWhiteSpace(charString[]);RemoveSurroundingWhiteSpace(str);SkipWhiteSpaceStrICmpWithoutSurrWhiteSpace……3/14/2023修饰符修饰符：[wn],[tn],[t#],[pn],[bn]……举例intiData[100];floatfData[100];Fmt(iData,”%100d<%100f”,fData);Fmt(string,"%s<%s%f[p2]","valueis",value);Scan(string,"%s>%s[t#]%f",str1,&value);Fmtwizard3/14/2023定时/等待(Timer/Wait)TimerdoubleTimer(void)DelayvoidDelay(doubleNumber_of_Seconds);Delay(3.0);SyncWaitvoidSyncWait(doubleBegin_Time,doubleInterval);SyncWait(mark,interval);日期/时间(Date/Time)DateStrchar*DateStr(void);格式：MM-DD-YYYYTimeStrchar*TimeStr(void);格式：HH:MM:SSGetSystemTimeint

GetSystemTime(int*Hours,int*Minutes,int*Seconds);3/14/2023文件应用Utilities－DeleteFileint

DeleteFile(char[]);i=DeleteFile("*.doc");RenameFileint

RenameFile(charExisting_[],charNew_[]);i=RenameFile("test1.dat","test2.dat");CopyFileint

CopyFile(charSource_[],charTarget_[]);i=CopyFile(“test1.dat”,“test2.dat”);Getint

Get(char[],int*Read-Only,int*System,int*Hidden,int*Archive);i=Get("test.dat",&read,&system,&hidden,&archive);3/14/2023ANSIC－stdio.hfopenFILE*fopen(constchar[],constcharMode[]);fp=fopen("test.dat","wb+");fcloseintfclose(FILE*Stream);i=fclose(fp);freadsize_tfread(void*Buffer,size_tElement_Size,size_tNumber_of_Elements,FILE*Stream);num=fread(data,4096,1024,fp);fwritesize_tfwrite(constvoid*Buffer,size_tElement_Size,size_tNumber_of_Elements,FILE*Stream);num=fwrite(data,4096,1024,fp);ftelllongftell(FILE*Stream);pos=ftell(fp);fseekintfseek(FILE*Stream,longOffset,intOrigin);i=fseek(fp,256,SEEK_SET);3/14/2023路径应用(DirectoryUtilities)GetDirint

GetDir(charCurrent_Directory[]);i=GetDir(dir);SetDirDeleteDirint

DeleteDir(charDirectory_Name[]);i=DeleteDir("d:\\test\\data");MakeDirint

MakeDir(charDirectory_Name[]);i=MakeDir("d:\\test\\data");GetProjectDirint

GetProjectDir(charDirectory_Name[]);i=GetProjectDir(dir);……3/14/2023IO端口(PortIO)inpcharinp(shortPort_Number);i=inp(0x220+4);