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254 lines
9.4 KiB
NASM
254 lines
9.4 KiB
NASM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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TITLE Assignment 3 (main.asm)
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;Author: Corwin Perren
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;Date: 2/05/2014
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;Description:
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; This program greets a user by name, takes in ten integers, sums
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; non-negative ones, and computers the average of that sum before saying
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; goodbye to the user
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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INCLUDE Irvine32.inc
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.data
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ProgramTitle BYTE "CS 271 - Assignment 3",0
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ProgrammerName BYTE "Written by: Corwin Perren",0
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NamePrompt BYTE "By what name may I call you?",0
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NamePrompt2 BYTE "Your name: ", 0
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NameResponse BYTE "Welcome, ", 0
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NameResponse2 BYTE ".", 0
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EnterNumPrompt BYTE "Please enter ten numbers between 0 and 100.", 0
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TooGreat BYTE "The number you entered was too large, please try again.", 0
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IncorrectInputMessage BYTE "You did not enter a valid number.", 0
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ListingPrint BYTE "Number ", 0
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ListingPrint2 BYTE ":", 0
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NoPosMessage BYTE "No Positive Integers Entered...", 0
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NumPosMessage BYTE "Number of Positive Integers: ", 0
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SumMessage BYTE "Sum of Positive Integers: ", 0
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AvgMessage BYTE "Average of Positive Integers: ", 0
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TermMessage BYTE "Goodbye, ", 0
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TermMessage2 BYTE ".", 0
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TESTMessage BYTE "Equal to Zero", 0
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NumEntries DWORD 10
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MaxEntryVal DWORD 100
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StorArray DWORD 10 dup(0)
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UserName BYTE 25 dup(0)
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NumPos DWORD 0
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FinalSum DWORD 0
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FinalAvg DWORD 0
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.code
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;Procedure for writing string with newline
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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Write_String_NL PROC uses EDX,
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StringPtr:Ptr BYTE ;Varible to store string offset pointer
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mov edx, StringPtr ;Moves the string to the proper register
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call WriteString ;Prints the string
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call Crlf ;Prints a new line
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ret
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Write_String_NL ENDP
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;Procedure for writing string without newline
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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Write_String PROC uses EDX,
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StringPtr:Ptr BYTE ;Variable to store string offset pointer
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mov edx, StringPtr ;Moves the string to the proper registers
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call WriteString ;Prints the string
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ret
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Write_String ENDP
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;Procedure for printing program title and programmer name
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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PrintTitle PROC
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INVOKE Write_String_NL, OFFSET ProgramTitle ;Prints the program title
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INVOKE Write_String_NL, OFFSET ProgrammerName ;prints the programmer's name'
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call Crlf ;Prints a new line
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ret
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PrintTitle ENDP
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;Procedure for getting user's name and greeting them
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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MeetAndGreet PROC
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INVOKE Write_String_NL, OFFSET NamePrompt ;Gets username prompt ready
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INVOKE Write_String, OFFSET NamePrompt2 ;Gets second half of username prompt ready
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mov edx,OFFSET UserName ;Moves offset for username storage var into edx
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mov ecx,SIZEOF UserName ;Sets max number of characters to read in
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call ReadString ;Reads in username string from user
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call Clrscr ;Clears the screen to clean up output
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INVOKE Write_String, OFFSET NameResponse ;Prints the first part of the welcome message
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INVOKE Write_String, OFFSET UserName ;Prints the user's name
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INVOKE Write_String_NL, OFFSET NameResponse2 ;Prints teh second half of the welcome message
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call Crlf ;Prints a new line
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ret
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MeetAndGreet ENDP
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;Procedure for printing what the user may enter
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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PrintEnterNumPrompt PROC
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INVOKE Write_String_NL, OFFSET EnterNumPrompt ;Gets welcome message part 2 redy to print
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ret
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PrintEnterNumPrompt ENDP
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;Procedure for retreiving integer inputs from user
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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GetNumbers PROC
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mov ecx, NumEntries ;Sets loop count variable
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mov esi, OFFSET StorArray ;Puts storage array into esi reg
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jmp EnterNum ;Jump to beginning of number entry
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IncorrectInput:
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INVOKE Write_String_NL, OFFSET IncorrectInputMessage ;Displays incorrect input message
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jmp EnterNum ;Jumps to beginning of number entry
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GreaterThanMax:
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INVOKE Write_String_NL, OFFSET TooGreat ;Displays number to great message
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EnterNum:
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INVOKE Write_String, OFFSET ListingPrint ;Prints number entry listing
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mov eax, NumEntries ;Moves total entries to eax
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inc eax ;Increments by one to start at 1 rather than 0
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sub eax, ecx ;Subracts current loop var to determine count val
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call WriteInt ;Writes for number entry listing
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INVOKE Write_String, OFFSET ListingPrint2 ;Finishes priting number entry listing
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call ReadInt ;Reads in int from user
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jo IncorrectInput ;Re-do previous if incorrect input
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cmp eax, MaxEntryVal ;Check if number too great
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jg GreaterThanMax ;Jump if number too great
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mov [esi], eax ;Move number if valid into array
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add esi, 4 ;Increment array pointer
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loop EnterNum ;Loop unti ecx equals 0
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ret
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GetNumbers ENDP
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;Procedure for determining number of positive integers, summing them, and
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;calculating their average
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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CalcStuff PROC
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mov ecx, NumEntries ;Puts loop counter in
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mov esi, OFFSET StorArray ;Gets array ready to loop through
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mov eax, 0 ;Makes sum register zero
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ArrayLoop:
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mov edx, [esi] ;Read out one array value
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add esi, 4 ;Increment array pointer
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cmp edx, 0 ;Check if negative
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jl ArrayLoopEnd ;Jump to ignore if negative
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add eax, edx ;If non-negative, add to sum reg
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inc NumPos ;Increment number of positive found
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ArrayLoopEnd:
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loop ArrayLoop ;Loop until array empty
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cmp NumPos, 0 ;Check if any positive found
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jne MoreThanZero ;Jump if there are positive integers
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Invoke Write_String_NL, OFFSET NoPosMessage ;Write no positive intergers message
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jmp QuickEnd ;End program because no positive integers
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MoreThanZero:
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mov FinalSum, eax ;Move positive integers sum to variable
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mov edx, 0 ;Zero upper of numerator
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mov ebx, NumPos ;Put value in lower of numerator
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div ebx ;Divide sum by number of positive integers
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mov FinalAvg, eax ;Take result which is average and store in varible
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call Crlf ;Print a new line
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ret
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CalcStuff ENDP
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;Prints the number of positive integers
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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PrintNumPos PROC
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Invoke Write_String, OFFSET NumPosMessage ;Print string for number of positive integers
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mov eax, NumPos ;Move varaible into printing register
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call WriteInt ;Print number of positive integers
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call Crlf ;Print a new line
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ret
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PrintNumPos ENDP
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;Prints the sum of the positive integers
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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PrintSumOf PROC
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Invoke Write_String, OFFSET SumMessage ;Print the message for the sum
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mov eax, FinalSum ;Move sum into printing register
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call WriteInt ;Print sum
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call Crlf ;Print new line
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ret
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PrintSumOf ENDP
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;Prints the average of the positive integers
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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PrintAverageOf PROC
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Invoke Write_String, OFFSET AvgMessage ;Print message for the average
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mov eax, FinalAvg ;Move average into printing register
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call WriteInt ;Print the average
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call Crlf ;Print a new line
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ret
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PrintAverageOf ENDP
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;Procedure for printing the termination message
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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PrintTerm PROC
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Invoke Write_String, OFFSET TermMessage ;Print the first part of the termination message
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Invoke Write_String, OFFSET UserName ;Print the user's name
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Invoke Write_String_NL, OFFSET TermMessage2 ;Print the second part of the termination message
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ret
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PrintTerm ENDP
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;Main Procedure
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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main PROC
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call PrintTitle ;Prints title
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call MeetAndGreet ;Greets user by name
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call PrintEnterNumPrompt ;Print prompt for program use
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call GetNumbers ;Retrieves user integer entries
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call CalcStuff ;Performs math on numbers entered
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call PrintNumPos ;Prints number of positive integers
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call PrintSumOf ;Prints sum of positive integers
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call PrintAverageOf ;Prints average of positive integers
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QuickEnd::
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call PrintTerm ;Prints termination message
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exit
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main ENDP
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END main |