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@zhanglianbo35
Created September 20, 2018 02:36
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递归算裴波那契数列
%let a = 0 ;
%let b = 1;
%put &a;
%put &b;
%macro xx;
%global a b;
%if %sysevalf(&a < 10000000000) %then %do;
%let a= %sysevalf(&a + &b);
%let b= %sysevalf(&a + &b);
%put &a;
%put &b;
%xx
%end;
%mend;
%xx
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