.MODEL SMALL
.STACK 100h 
.DATA

.CODE
MAIN PROC 
    MOV AH, 1 
    INT 21h 
    CMP AL, 'E'
    JE EXCELLENT
    CMP AL, 'V'
    JE VERY_GOOD
    CMP AL, 'G' 
    JE GOOD 
    JMP END
    
    EXCELLENT: 
    MOV DX, OFFSET EXCELLENT_MSG 
    JMP PRINT
    
    VERY_GOOD:
    MOV DX ,OFFSET VERY_GOOD_MSG 
    JMP PRINT  
    
    GOOD: 
    MOV DX, OFFSET GOOD_MSG 
    
    PRINT: 
    MOV AH, 9
    INT 21h   
    
    END: MOV AH, 4Ch 
    INT 21h 
    EXCELLENT_MSG DB 'Excellent$', 0 
    VERY_GOOD_MSG DB 'Very Good$', 0 
    GOOD_MSG DB 'Good$', 0  
    
    MAIN ENDP
    END MAIN