每天一例SAS题（7）

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/*the variables name in sas don't distinguish between capital letter and lower case . but for character variables , the value should distinguish it . */ data temp; city='beijing'; city1='Beijing'; run; data temp2; input a b; datalines; 1 2 2 . 3 2 2 . ;    /*in sas , use dot when the value is default. */ run; data temp3; length a$ 6; /*use length specify the variable's length.*/ input a$; datalines; 123564 231066 654123 ; run; data temp4; a='I'; b='Love'; c='You'; d=a||b||c; /*the operator || means combine several variables.*/ run;    data temp5; a=6; b=3; c=a<>b; /*the operater of <> means get the grater value , and the operator >< means get smaller latter.*/ d=a><b; run;

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关键词：distinguish Variables Character Variable operator SAS