Some SAS code for beginners

So I was talking to someone on SAS University Edition and I wanted to show how easy SAS language is. This was some code I came up with with output commented out

SAS code here;

/*NOTE COMMENTS CAN BE GIVEN BY SELECTING A LINE AND PRESSING CTRL and / */
/* AUTOEXEC file loads starting up commands*/
/* Using different formats */
data test;
format ajay ddmmyy6. ajay2 date9.;
ajay=today();
ajay2=today();
ajay3=today();
run; 

/* printing out output */
proc print data=test;
run;



/* The SAS System */
/* Obs ajay ajay2 ajay3 */
/* 1 080315 08MAR2015 20155 */
/* what datasets are there in a library */
proc datasets lib=work;
quit;

proc datasets lib=sashelp;
quit;

/* copying a dataset from one to another */
data test2;
set sashelp.cars;
run;

/* NOTE: The data set WORK.TEST2 has 428 observations and 15 variables. */
/* conditionally copying a dataset from one to another */
data test2;
set sashelp.cars;
where cylinders=8;
run;

/* */
/* NOTE: There were 87 observations read from the data set SASHELP.CARS. */
/* WHERE cylinders=8; */
/* what variables are there in a dataset */
proc contents data=test2 varnum;
quit;

/* what is the frequency and number of levels of certain variables in a dataset */
proc freq data=sashelp.cars nlevels;
tables make*cylinders/nocol nopercent nocum norow;
quit;

/* what is a cross tab frequency of two or more variables */
proc freq data=test2;
tables make*cylinders;
quit;

/* what are some summary statistics of a variable */
proc means data=test2;
var mpg_city;
quit;

/* The MEANS Procedure */
/* Analysis Variable : MPG_City MPG (City) */
/* N Mean Std Dev Minimum Maximum */
/* 428 20.0607477 5.2382176 10.0000000 60.0000000 */

/* what are some summary statistics of a variable grouped by a class variable */
proc means data=test2 n p1 p75 std median mean max;
var mpg_city;
class cylinders;
quit;

/* The MEANS Procedure */
/* Analysis Variable : MPG_City MPG (City) */
/* Cylinders N Obs N 1st Pctl 75th Pctl Std Dev Median Mean Maximum */
/* 3 1 1 60.0000000 60.0000000 . 60.0000000 60.0000000 60.0000000 */
/* 4 136 136 18.0000000 26.0000000 5.2093430 24.0000000 24.9411765 59.0000000 */
/* 5 7 7 18.0000000 20.0000000 0.8997354 20.0000000 19.8571429 21.0000000 */
/* 6 190 190 14.0000000 20.0000000 1.7630130 19.0000000 18.5157895 23.0000000 */
/* 8 87 87 10.0000000 17.0000000 1.8912565 16.0000000 15.8735632 18.0000000 */
/* 10 2 2 10.0000000 12.0000000 1.4142136 11.0000000 11.0000000 12.0000000 */
/* 12 3 3 12.0000000 13.0000000 0.5773503 13.0000000 12.6666667 13.0000000 */
/* making a libname */
libname sas2 "/folders/myfolderssasuser.v94";
quit;

/* importing data from a file */
proc import datafile="/folders/myfolders/sasuser.v94/adult.data" dbms=csv
out=ajay.adult;
quit;

proc contents data=adult varnum;
quit;
/*--Histogram--*/
proc sgplot data=sashelp.cars(where=(type ne 'Hybrid'));
histogram mpg_city;
/* density mpg_city / lineattrs=(pattern=solid); */
/* density mpg_city / type=kernel lineattrs=(pattern=solid); */
/* keylegend / location=inside position=topright across=1; */
/* yaxis offsetmin=0 grid; */
run;
title 'mpg_city';
proc sgplot data=sashelp.cars;
histogram mpg_city ;
/* density mpg_city / lineattrs=(pattern=solid); */
/* density mpg_city / type=kernel lineattrs=(pattern=solid); */
/* keylegend / location=inside position=topright across=1; */
/* yaxis offsetmin=0 grid; */
run;

proc contents data =sashelp.cars varnum;
run;