各位大侠，请指教！下面的程序里面，我自己认为没有错误，为什么每次运行的时候，都提示我D:\WORLDSCOPE\INT-&N.txt不存在呢？
请各位告诉可以吗，我怎么试验都不可以


%macro MTEST(N);
%do i=1 %to &N;
data WORK.int&N ;
       %let _EFIERR_ = 0; /* set the ERROR detection macro variable */
       infile 'D:\WORLDSCOPE\INT-&N.txt' delimiter='09'x MISSOVER DSD lrecl=32767  firstobs=2 ;
          informat ______________00100000____001001 $97. ;
          format ______________00100000____001001 $97. ;
          input     ______________00100000____001001 $   ;
       if _ERROR_ then call symputx('_EFIERR_',1);  /* set ERROR detection macro variable */
run;
data mysas.int&N;
length wscode $9  year$4  frequency$1 field$5 value1$19 value2$3 currency$3;
set int&N(rename=(______________00100000____001001=temp));
wscode=substr(temp,1,9);
year=substr(temp,10,4);
frequency=substr(temp,14,1);
field=substr(temp,18,5);
value1=substr(temp,52,19);
value2=substr(temp,71,3);
currency=substr(temp,92,3);
keep wscode year frequency field value1 value2 currency;
run;
%end;
%mend MTEST;
%MTEST(7)