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	title Number Addition                                                  (add.asm)   ; Dani Horowitz ; CSC111 x86 Assembly Programming   ; This program adds integers a user inputs   INCLUDE Irvine32.inc   ;-------------------------------------------------- .stack               ; begin stack segment   ;-------------------------------------------------- .data               ; begin data segment        sum               dword     0      counter          dword     0      prompt          byte     "Enter a value: (0 to stop) ", 0      result          byte     "The sum of ", 0      count          byte     " numbers is ", 0       ;-------------------------------------------------- .code               ; begin code segment   ;--------------------------------------------------     ;-------------------------------------------------- prompt_user PROC ; ; Take a break! Pauses screen ;--------------------------------------------------        mov          edx, OFFSET prompt          ; prompt user to enter values      call     WriteString      call     Crlf   GetValue:        call     ReadInt                         ; read integer from keyboard      jo          Overflow                    ; if ReadInt set overflow flag, jump to Overflow        add          sum, eax                    ; add entered value to accumulator sum      jo          Overflow                    ; if addition set overflow flag, jump to Overflow        cmp          eax, 0                         ; did user enter 0?      je          Done                         ;   if yes, goto Done            inc          counter                         ; increment counter      jmp          GetValue                    ; loop   Overflow:        mov          eax, 0      mov          sum, 0       Done:                 ret ;-------------------------------------------------- prompt_user ENDP ;--------------------------------------------------   ;-------------------------------------------------- print_sum PROC ; ; Take a break! Pauses screen ;--------------------------------------------------        mov          edx, OFFSET result     ; prints "The sum of "      call     WriteString            mov          eax, counter          ; prints count of #s entered      call     WriteDec            mov          edx, OFFSET count     ; prints " numbers is "      call     WriteString                 mov          eax, sum               ; prints sum      call     WriteDec      call     Crlf        ret ;-------------------------------------------------- print_sum ENDP ;--------------------------------------------------   ;-------------------------------------------------- main proc ;--------------------------------------------------      call     Clrscr               ; clear screen      call     prompt_user          ; get integers      call     print_sum          ; print their sum      exit       main  endp end main ;--------------------------------------------------

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