[求助]如何讀取內含有數值和星號的檔案

% function transdata
fp1=fopen('data.txt','r');
xydata=[];
zdata=[];
index=[];
count=1;
while(feof(fp1)~=1)
temp=fscanf(fp1,'%f%f',[1 2]);
xydata=[xydata;temp];
zstr=fscanf(fp1,'%s',1);
if(zstr(1)=='*')
zdata=[zdata;0];
index=[index count]
else
zdata=[zdata;str2num(zstr)];
end
count=count+1;
end
fclose(fp1);
[row,col]=size(xydata);
aver=sum(zdata)/(row-length(index))
fp2=fopen('newdata.txt','w');
count=1;
for i=1:row
fprintf(fp2,'%f\t%f\t',xydata(i,:));
if(i==index(count))
fprintf(fp2,'%f\n',aver);
count=count+1;
else
fprintf(fp2,'%f\n',zdata(i));
end
end
fclose(fp2);