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POHow to count number of words in a sentence in Assembly.
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  1. POHow to count number of words in a sentence in Assembly.
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    copied!<p>Sorry, this is the first time posting on stackoverflow so excuse me for any improper edicts. I've posted my LC-3 assembly code that asks user for a sentence and a word. Then the program checks how many times that <code>word</code> comes up in the sentence; then outputs the counter. I'm pretty sure my issue is that the two strings include ether <code>space</code> or <code>enter</code> so its not a match.</p> <p>Also, I have not implemented the overall counter yet, and thanks in advance for the help.</p> <pre><code>.ORIG X3000 LEA R2, SENTENCE LD R4, COUNTER LD R6, END_COUNTER LEA R3, USER_WORD LEA R0, PROMPT PUTS AND R0, R0, #0 ;---------GET SENTENCE FROM USER------------------------- GET_ANOTHER_CHAR: GETC OUT STR R0, R2, #0 ADD R2, R2, #1 ADD R0, R0, #-10 BRz GET_WORD_FROM_USER BRnp GET_ANOTHER_CHAR ;---------GET WORD FROM USER----------------------------- GET_WORD_FROM_USER: LEA R0, PROMPT_TWO PUTS ANOTHER_LETTER_WORD: AND R0, R0, #0 GETC OUT STR R0, R3, #0 ADD R3, R3, #1 ADD R0, R0, #-10 BRz COMPARE_BOTH ADD R4, R4, #1 BRnp ANOTHER_LETTER_WORD ;-------COMPARE EACH WORD IN THE SENTENCE---------------- COMPARE_BOTH: AND R0, R0, #0 AND R5, R5, #0 LDR R0, R2, #0 BRz END_OF_SENTENCE LDR R5, R3, #0 NOT R5, R5 ADD R5, R5, #1 ADD R5, R0, R5 BRz LETTERS_MATCHED ADD R2, R2, #1 BRnp COMPARE_BOTH BRz END_OF_SENTENCE ;-----COMPARE EACH LETTER------------------------------- LETTERS_MATCHED: ADD R4, R4, #-1 BRz WORD_MATCHES AND R0, R0, #0 AND R5, R5, #0 ADD R2, R2, #1 ADD R3, R3, #1 LDR R0, R2, #0 LDR R5, R3, #0 NOT R5, R5 ADD R5, R5, #1 ADD R5, R0, R5 BRz LETTERS_MATCHED BRnp COMPARE_BOTH ;------WORD MATCHES------------------------------------ WORD_MATCHES: AND R0, R0, #0 ADD R6, R6, #1 ADD R2, R2, #1 LDR R0, R2, #0 BRz PROGRAM_FINISH BRnp COMPARE_BOTH PROGRAM_FINISH: AND R0, R0, #0 LEA R0, PROMPT_THREE PUTS HALT END_OF_SENTENCE: AND R0, R0, #0 LEA R0, PROMPT_FOUR PUTS HALT PROMPT .stringz "Enter some text(max 300 characters) \n" PROMPT_TWO .stringz "What word are you looking for? \n" PROMPT_THREE .stringz "match!" PROMPT_FOUR .stringz "no match!" SPACE .fill #-32 COUNTER .fill #0 END_COUNTER .fill #0 USER_WORD .blkw 10 SENTENCE .blkw 300 .END </code></pre> <hr>
 

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