QBasic: A Program To Input The Scores And Compute Grades Of Students

First Of all, we'd write down the scoring and grading system used by the school. The example below is used by Foodtech Building School (FBS).

Score Range (%)	Grade	Score Range (%)		Grade
75 – 100	A1	40 – 44		D2
70 – 74	A2	35 – 39		E1
65 – 69	B1	30 – 34		E2
60 – 64	B2	25 – 29		G1
55 – 59	C1	20 – 24		G2
50 – 54	C2	0 – 19		F
45 – 49	D1	No Entry		NE
		Sick	SS

Then Program Code Below!...

REM Program to input score and compute grade
REM using SELECT CASE... END SELECT structure
CLS
DIM Score AS INTEGER, Grade AS STRING
INPUT "Please Enter Student's Score Here: ", Score
SELECT CASE (Score)
    CASE 75 TO 100
        Grade = "A1"
    CASE 70 TO 74
        Grade = "A2"
    CASE 65 TO 69
        Grade = "B1"
    CASE 60 TO 64
        Grade = "B2"
    CASE 55 TO 59
        Grade = "C1"
    CASE 50 TO 54
        Grade = "C2"
    CASE 45 TO 49
        Grade = "D1"
    CASE 40 TO 44
        Grade = "D2"
    CASE 35 TO 39
        Grade = "E1"
    CASE 30 TO 34
        Grade = "E2"
    CASE 25 TO 29
        Grade = "G1"
    CASE 20 TO 24
        Grade = "G2"
    CASE 0 TO 19
        Grade = "F: Student might have fallen sick (SS)"
    CASE ELSE
        Grade = "Invalid Score: No Entry (NE)"
END SELECT
PRINT
PRINT "The Student's Score Is: "; Score
PRINT
PRINT "The Student's Grade Is: "; Grade
END

See the Output Image below:

If you have suggestions, contributions or corrections, kindly leave a comment! Thank you