MASTER OF COMPUTER APPLICATIONS
Course Code : MCSL-017
Course Title : C and Assembly Language Programming
Assignment Number : MCA(1)/L017/Assign/2014-15
Maximum Marks : 100
Weightage : 25%
Write a program in assembly language to print out the length of string.
DATA SEGMENT
STR DB ‘GANGADHAR$’
MSG1 DB 10,13,’THE STRING IN THE MEMORY IS : $’
MSG2 DB 10,13,’LENGTH OF THE STRING IS :- $’
LEN DB 0H
DATA ENDS
DISPLAY MACRO MSG
MOV AH,9
LEA DX,MSG
INT 21H
ENDM
CODE SEGMENT
ASSUME CS:CODE,DS:DATA
START:
MOV AX,DATA
MOV DS,AX
DISPLAY MSG1
DISPLAY STR
LEA SI,STR
NEXT:
CMP [SI],’$’
JE DONE
INC LEN
INC SI
JMP NEXT
DONE:
DISPLAY MSG2
MOV AL,LEN
ADD AL,30H
MOV DL,AL
MOV AH,2
INT 21H
MOV AH,4CH
INT 21H
CODE ENDS
END START
Program Code :
[codesyntax lang=”asm” lines=”normal”]
DATA SEGMENT
STR DB ‘GANGADHAR$’
MSG1 DB 10,13,’THE STRING IN THE MEMORY IS : $’
MSG2 DB 10,13,’LENGTH OF THE STRING IS :- $’
LEN DB 0H
DATA ENDS
DISPLAY MACRO MSG
MOV AH,9
LEA DX,MSG
INT 21H
ENDM
CODE SEGMENT
ASSUME CS:CODE,DS:DATA
START:
MOV AX,DATA
MOV DS,AX
DISPLAY MSG1
DISPLAY STR
LEA SI,STR
NEXT:
CMP [SI],’$’
JE DONE
INC LEN
INC SI
JMP NEXT
DONE:
DISPLAY MSG2
MOV AL,LEN
ADD AL,30H
MOV DL,AL
MOV AH,2
INT 21H
MOV AH,4CH
INT 21H
CODE ENDS
END START
[/codesyntax]
Screen shots :-
After Execution :-
