* Encoding: UTF-8.

*1 Declare new string variable.

STRING Gender_1 (a20).

*2 Extract first letter of first name.

COMPUTE Gender_1 = CHAR.SUBSTR(Gender,1,1).
EXECUTE.

*3 Convert to upper case
    
COMPUTE Gender_1 = UPCASE(Gender_1).
EXECUTE.

*4 Substitution: use substring function wihin upcase function.

COMPUTE Gender_1 = UPCASE(CHAR.SUBSTR(Gender,1,1)).
EXECUTE.

*5 Extract remaining letters and convert to lower case.

COMPUTE Gender_1 = LOWER(CHAR.SUBSTR(gender,2)).
EXECUTE.

*6 Substitution: concatenate results from previous attempts.
COMPUTE Gender_1 = CONCAT(UPCASE(CHAR.SUBSTR(Gender,1,1)),LOWER(CHAR.SUBSTR(Gender,2))).
EXECUTE.