Executing stored procedure prints only the last record - sql-server

Question

CREATE PROCEDURE DISPLAY3
#semester int,
#StdName varchar(15) OUTPUT,
#LMarks int OUTPUT,
#HMarks int OUTPUT
AS
BEGIN
SELECT DISTINCT
#StdName = StdName,
#HMarks = MAX(sm.MarksObtained),
#LMarks = MIN(sm.MarksObtained)
FROM
std s
INNER JOIN
stdcourseteacher sct ON sct.StdID = s.StdID
INNER JOIN
Exam e ON e.SemID = #semester AND e.Topic = 'Final-Term'
INNER JOIN
StdMarks sm ON sm.StdID = sct.StdID AND e.ExamID = sm.ExamID
GROUP BY
s.StdName, sm.ExamID
END
Execution:
DECLARE #StdName varchar(15)
DECLARE #LMarks int
DECLARE #HMarks int
EXEC DISPLAY3 6, #StdName OUTPUT, #LMarks OUTPUT, #HMarks OUTPUT
PRINT 'Student Name: ' + CONVERT(varchar(15), #StdName) + CHAR(13)
PRINT 'Lowest Marks in Final Term of this Semester: ' + CONVERT(varchar(10), #LMarks)
PRINT 'Highest Marks in Final Term of this Semester: ' + CONVERT(varchar(10), #LMarks)
Output:
Student Name: Waqar
Lowest Marks in Final Term of this Semester: 50
Highest Marks in Final Term of this Semester: 50
Waqar is last record, the above records are not printing. I know it has to do something with appending but I got confused while appending because my code has input as well.

Answer 1

Normally you would just return a resultset, and the calling program would display the data. So
create or alter procedure DISPLAY3 #semester int
as
begin
select StdName, HMarks = Max(sm.MarksObtained), LMarks = Min(sm.MarksObtained)
from std s
inner join stdcourseteacher sct on sct.StdID = s.StdID
inner join Exam e on e.SemID = #semester and e.Topic = 'Final-Term'
inner join StdMarks sm on sm.StdID = sct.StdID and e.ExamID = sm.ExamID
group by s.StdName
end