How to import a raw data using "input" in SAS - input

Question

I'd like to import a raw data using "input" in SAS. My following program doesn't work well. How do I do that? Please give me some advice.
data dt00;
infile datalines;
input Year School & $27. Enrolled : comma.;
datalines;
1868 U OF CALIFORNIA BERKELEY 31,612
1906 U OF CALIFORNIA DAVIS 21,838
1965 U OF CALIFORNIA IRVINE 15,874
1919 U OF CALIFORNIA LOS ANGELES 35,730
;
run;

Answer 1

The & modifier in your input statement says to look for two or more delimiters in a row to mark the end of the next "word" in the line. Make sure the lines of data actually have the extra space. Also make sure to include the : modifier in front of any informat specification in the INPUT statement.
data dt00;
input Year School & :$27. Enrolled : comma.;
datalines;
1868 U OF CALIFORNIA BERKELEY 31,612
1906 U OF CALIFORNIA DAVIS 21,838
1965 U OF CALIFORNIA IRVINE 15,874
1919 U OF CALIFORNIA LOS ANGELES 35,730
;

Answer 2

datalines is space-separated by default. You can specify specific line lengths as you are doing and do additional post-processing cleanup, but the easiest thing to do is add a different delimiter and include the dlm option in your infile statement.
data dt00;
infile datalines dlm='|';
length Year 8. School $27. Enrolled 8.;
input Year School$ Enrolled : comma.;
datalines;
1868|U OF CALIFORNIA BERKELEY|31,612
1906|U OF CALIFORNIA DAVIS|21,838
1965|U OF CALIFORNIA IRVINE|15,874
1919|U OF CALIFORNIA LOS ANGELES|35,730
;
run;
Output:
Year School Enrolled
1868 U OF CALIFORNIA BERKELEY 31612
1906 U OF CALIFORNIA DAVIS 21838
1965 U OF CALIFORNIA IRVINE 15874
1919 U OF CALIFORNIA LOS ANGELES 35730
SAS has a ton of options on the input statement for reading both structured and unstructured data, but at the end of the day, it's easiest to get it in a delimited format whenever possible.