When I run my program I outputs a weird error message.

> In Woodworth_Hugh_Project2 at 66 \people.soecs.ku.eduWarning: Escape sequence 'e' is not valid. See 'help sprintf' for valid escape sequences.

clear all clc

fullPath=mfilename('fullpath'); curMfile=mfilename();

path=fullPath(1:length(fullPath)-length(curMfile));

fileName='studentRecordsBroken.dat'; outFileName=[path,'copy_','studentRecordsFixed.dat']; emailFileName=[path,'studentEmails.dat'];

str='%s'; int='%i'; float='%f'; nl='\n';

fieldWidth=10;

outStr=['%s',num2str(fieldWidth),'s']; outInt=['%i',num2str(fieldWidth),'i']; outFloat=['%f',num2str(fieldWidth),'f'];

inFile=fopen(fileName, 'r'); outFile=fopen(outFileName, 'w'); emailFile=fopen(emailFileName, 'w');

if (inFile==-1) error('File can not be opened'); else disp([fileName,' has been opened.']); end [fname,count]=fscanf(inFile,str,1); [lname,count]=fscanf(inFile,str,1); [id,count]=fscanf(inFile,int,1); [dept,count]=fscanf(inFile,str,1); [gpa,count]=fscanf(inFile,float,1); [credit,count]=fscanf(inFile,int,1);

 itr=1;
 while count==1
     gpa=gpa+1;
     gpaVector(itr)=gpa;

     creditVector(itr)=credit;

     emailStr=[fname,'.', lname, '.',num2str(id),'.','@',dept,'.edu'];
     num2str(emailStr);
 [fname,count]=fscanf(inFile,str,1);
 [lname,count]=fscanf(inFile,str,1);
 [id,count]=fscanf(inFile,int,1);
 [dept,count]=fscanf(inFile,str,1);
 [gpa,count]=fscanf(inFile,float,1);
 [credit,count]=fscanf(inFile,int,1);

 fprintf(outFile,outStr,fname);
 fprintf(outFile,outStr,lname);
 fprintf(outFile,outInt,id);
 fprintf(outFile,outStr,dept);
 fprintf(outFile,outFloat,gpa);
 fprintf(outFile,outInt,credit);

 fprintf(emailFileName,outStr,emailStr);

 itr=itr+1;
 end

gpaAvg = mean(gpa); creditAvg = mean(credit);

disp(['The highest gpa: ', num2str(max(gpa))]); disp(['The lowest gpa: ', num2str(min(gpa))]);

disp(['The highest credits: ', num2str(max(credit))]); disp(['The lowest credits: ', num2str(min(credit))]);

disp(['The average gpa: ', num2str(gpaAvg)]); disp(['The average credits: ', num2str(creditAvg)]);

Answer 1

[Lokesh Ravindranathan]

It s a warning message with an escape sequence which is not ISO standard. I think your file contains these escape sequences.