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Program that lets the user type some text, consisting of words separated by blanks, ending with a carriage return, and displays the text..............

Posted By: Easy Tutor     Category: Assembly Language     Views: 6520

An AL Program that lets the user type some text, consisting of words separated by blanks, ending with a carriage return, and displays the text in the same word ordered as entered, but with the letters in each word reversed.

Code for Program that lets the user type some text, consisting of words separated by blanks, ending with a carriage return, and displays the text.............. in Assembly Language

 .MODEL SMALL
 .STACK 100H

 .DATA
   PROMPT_1  DB  'Enter the string : $'
   PROMPT_2  DB  0DH,0AH,'The string with words in reverse order : $'

   COUNT     DW  0

 .CODE
   MAIN PROC
     MOV AX, @DATA                ; initialize DS 
     MOV DS, AX

     LEA DX, PROMPT_1             ; load and display PROMPT_1 
     MOV AH, 9
     INT 21H

     XOR CX, CX                   ; clear CX
     MOV AH, 1                    ; set input function

     @INPUT:                      ; loop label
       INT 21H                    ; read a character

       CMP AL, 0DH                ; compare AL with CR
       JE @END_INPUT              ; if AL=CR jump to label @END_INPUT

       PUSH AX                    ; push AX onto the STACK
       INC CX                     ; set CX=CX+1
     JMP @INPUT                   ; jump to label @INPUT

     @END_INPUT:                  ; jump label

     MOV BX, 50H                  ; set BX=50H

     XCHG BX, SP                  ; swap BX and SP

     PUSH 0020H                   ; push 0020H onto the STACK

     XCHG BX, SP                  ; swap BX and SP
     INC COUNT                    ; set COUNT=COUNT+1
    
     @LOOP_1:                     ; loop label
       POP DX                     ; pop a value from STACK into DX

       XCHG BX, SP                ; swap BX and SP

       PUSH DX                    ; push DX onto the STACK

       XCHG BX, SP                ; swap BX and SP
       INC COUNT                  ; set COUNT=COUNT+1
     LOOP @LOOP_1                 ; jump to label @LOOP_1 if CX!=0

     LEA DX, PROMPT_2             ; load and display PROMPT_2 
     MOV AH, 9
     INT 21H

     MOV CX, COUNT                ; set CX=COUNT
     MOV COUNT, 0                 ; set COUNT=0
 
     PUSH 0020H                   ; push 0020H onto the STACK
     INC COUNT                    ; set COUNT=COUNT+1

     @OUTPUT:                     ; loop label
       XCHG BX, SP                ; swap BX and SP

       POP DX                     ; pop a value from STACK into DX

       XCHG BX, SP                ; swap BX and SP

       CMP DL, 20H                ; compare DL with 20H
       JNE @SKIP_PRINTING         ; jump to label @SKIP_PRINTING if DL!=20H

       MOV AH, 2                  ; set output function

       @LOOP_2:                   ; loop label
         POP DX                   ; pop a value from STACK into DX 
         INT 21H                  ; print a character

         DEC COUNT                ; set COUNT=COUNT-1
       JNZ @LOOP_2                ; jump to label @LOOP_2 if COUNT!=0

       MOV DX, 0020H              ; set DX=0020H

       @SKIP_PRINTING:            ; jump label

       PUSH DX                    ; push DX onto the STACK
       INC COUNT                  ; set COUNT=COUNT+1
     LOOP @OUTPUT                 ; jump to label @OUTPUT if CX!=0

     MOV AH, 4CH                  ; return control to DOS
     INT 21H
   MAIN ENDP
 END MAIN

 ;**************************************************************************;
 ;**************************************************************************;
 ;--------------------------------  THE END  -------------------------------;
 ;**************************************************************************;
 ;**************************************************************************;
  
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Easy Tutor
Easy Tutor author of Program that lets the user type some text, consisting of words separated by blanks, ending with a carriage return, and displays the text.............. is from United States. Easy Tutor says

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Ali Raza from Pakistan Comment on: Feb 01
sir plz tell me can 0020h can be directly pushed into the stack????????
plz reply soon
with best wishes?????????????

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