我发的所有命令我都在sas9.1运行过了，都可以运行哦~放心用吧！

/* sas有各种语言，与其他编程语言一样，都有输出语句，也有条件语句和循环语句及赋值语句*/

proc print data=sasuser.wage;   /* 打印 */

var wage sex race;

run;

data aa;

set sasuser.wage;

if sex=1 then delete;   /* 条件语句*/

run;

data bb;

input x y z@@;

if x>=20 then class=1;   /* 条件语句*/

else class=2;

cards;

15 26 5 1328 32 18 35 12 30 30 20

;

run;

Data cc;

Do n = "n1","n2","n3","n4","n5" ;

Do w =" 1","2","3";      /* 循环语句 */

Input y @@;

output;

End;

end;  /* 循环语句结束语句*/

Cards;

90.53 88.4347.37 175.8 100.0190.53 88.43 47.37 175.8 100.0190.53 88.43 47.37 175.8100.0190.53 88.43 47.37 175.8 100.01   142.12  163.17  63.16 166.33 144.75 142.12  163.17  63.16 166.33 144.75 142.12  163.17  63.16 166.33 144.75 142.12  163.17  63.16 166.33 144.75     87.3887.3887.3887.38    65.27 68.43 210.54 194.7565.27 68.43 210.54194.7565.27 68.43 210.54 194.7565.27 68.

43 210.54194.75

;

run;

data dd;/*循环语句*/

   Interest = .0375;

   Total = 100;

    do Year = 1 to 3;

        Total + Interest*Total;

        output;

     end;

format Total dollar10.2;   /*格式语句*/

run;

data ee;/*循环语句*/

do i=1 to 20 by 2;

j=i**3;

output;

end;

run;

title 'invest';      /*输出窗口的主题为'invest'*/

data ff;

do year=1 to 10 until (capital>50000);  /*循环语句*/

capital+4000;

capital+(capital*0.1);

output;             /*强制输出一条记录'*/

format capital dollar12.2;

end;

proc print data=ff  noobs;

format capital dollar12.2;

run;

data gg;

do year=1 to 20; /*循环语句*/

capital+2000;

  do mouth=1 to 12;

  i=capital*(0.075/12);

  capital+i;

  end;

end;

run;

data leave_it;   /*运用到leave跳出循环的循环语句*/

   Interest = .0375;

   Total = 100;

    do Year = 1 to 100;

         Total = Total + Interest*Total;

         output;

         ifTotal ge 200 then leave;

     end;

    format Total dollar10.2;

run;

data continue_on;   /*运用到continue跳出本次循环下次循环的语句，进入的循环语句*/

  Interest = .0375;

  Total = 100;

  do Year = 1 to 100 until (Total ge 200);

      Total = Total + Interest*Total;

      if Total le 150 then continue;

      output;

   end;

format Total dollar10.2;

run;

大家加油哦~~