Hi forum, I just need help on my code. I am trying to find all the Armstrong numbers from 100-999(i.e. when the cubes of three digits added together equal the number - 1^3 + 5^3 + 3^3 = 153.) My code works until it gets to line 93, then it proceeds with some bizarre information as Debug.exe showed me. Help would be greatly appreciated, here is my C++ algorithm:
#include <iostream>
using namespace std;
int main()
{
// No inputs.
// Start here.
for(int digit1 = 1; digit1 < 10; digit1++)
{
for(int digit2 = 0; digit2 < 10; digit2++)
{
for(int digit3 = 0; digit3 < 10; digit3++)
{
if((digit1*digit1*digit1)+(digit2*digit2*digit2)+(digit3*digit3*digit3) == (digit1*100+digit2*10+digit3))
{
cout << digit1 << digit2 << digit3 << " is armstrong.";
system("pause");
}
}
}
}
system("pause");
return 0;
}// End here.;
; DILLON SHEFFIELD
;
PAGE 55,132
TITLE LAB3-PROGRAM TO FIND ARMSTRONG NUMBERS FROM 100-999
;
STACKSG SEGMENT PARA STACK
DW 32 DUP(?)
STACKSG ENDS
;
DATASG SEGMENT PARA
DIGIT1 DB 1
DIGIT2 DB 0
DIGIT3 DB 0
TEMP1 DW ?
TEMP2 DW ?
TEMP3 DW ?
OUTVAL DB 10 DUP(' ')
OUTLEN DB ?
BINFLD DW ?
DATASG ENDS
;
CODESG SEGMENT PARA
BEGIN PROC FAR ;Start main procedure
ASSUME CS:CODESG,DS:DATASG,SS:STACKSG,ES:DATASG
MOV AX,DATASG ;Set up ds to point to beginning of
MOV DS,AX ;data segment
MOV ES,AX ;Likewise ES for any I/O calls
;
START:
MOV BL,DIGIT1 ;Store DIGIT1 in the BL register.
MOV AL,DIGIT1 ;Store DIGIT1 in the AL register.
MUL BL ;Then multiply [DIGIT1 * DIGIT1] and store in AX.
MOV TEMP1,AX ;Move product to TEMPORARY1 storage.
MOV BX,TEMP1 ;Copy the product to the BX register.
MUL BX ;Then multiply [(DIGIT2 * DIGIT2) * DIGIT2].
MOV TEMP1,AX ;Then store DIGIT1 CUBED in TEMP1.
;
MOV BL,DIGIT2 ;Store DIGIT2 in the BL register.
MOV AL,DIGIT2 ;Store DIGIT2 in the AL register.
MUL BL ;Then multiply [DIGIT2 * DIGIT2] and store in AX.
MOV TEMP2,AX ;Move product to TEMPORARY2 storage.
MOV BX,TEMP2 ;Copy the product to the BX register.
MUL BX ;Then multiply [(DIGIT2 * DIGIT2) * DIGIT2].
MOV TEMP2,AX ;Then store DIGIT2 CUBED in TEMP2.
MOV AX,TEMP1 ;Copy DIGIT1 CUBED in the AX register.
MOV BX,TEMP2 ;Copy DIGIT2 CUBED in the BX register.
ADD AX,BX ;Add [DIGIT1^3 + DIGIT2^3] and store in AX.
MOV TEMP1,AX ;Then store the sum in TEMP1, overwriting DIGIT1 CUBED.
;
MOV BL,DIGIT3 ;Store DIGIT3 in the BL register.
MOV AL,DIGIT3 ;Store DIGIT3 in the AL register.
MUL BL ;Then multiply [DIGIT3 * DIGIT3] and store in AX.
MOV TEMP3,AX ;Move product to TEMPORARY3 storage.
MOV BX,TEMP3 ;Copy the product to the BX register.
MUL BX ;Then multiply [(DIGIT3 * DIGIT3) * DIGIT3].
MOV TEMP3,AX ;Then store DIGIT3 CUBED in TEMP3.
MOV AX,TEMP1 ;Copy [DIGIT1^3 + DIGIT2^3] in the AX register.
MOV BX,TEMP3 ;Copy DIGIT3 CUBED in the BX register.
ADD AX,BX ;Add [(DIGIT1^3 + DIGIT2^3) + DIGIT3^3] and store in AX.
MOV TEMP1,AX ;Then store the sum in TEMP1, overwriting [DIGIT1^3 + DIGIT2^3].
; TEMP1 only matters now and contains [DIGIT1^3 + DIGIT2^3 + DIGIT3^3].
MOV BL,DIGIT1 ;Store the current value of DIGIT1 in the BL register.
MOV AL,100 ;Load AL with 100.
MUL BL ;Then multiply [DIGIT1 * 100].
MOV TEMP2,AX ;Then store the product in TEMP2.
MOV BL,DIGIT2 ;Store the current value of DIGIT2 in the BL register.
MOV AL,10 ;Load AL with 10 this time.
MUL BL ;The multiply [DIGIT2 * 10].
ADD AX,TEMP2 ;Now add [(DIGIT1 * 100) + (DIGIT2 * 10)].
MOV BL,DIGIT3 ;Move DIGIT3's value to the BL register.
MOV BH,0 ;Move leading 0s in to BH register
ADD AX,BX ;Finally add [(DIGIT1 * 100) + (DIGIT2 * 10) +
;DIGIT3] and store in the AX register.
MOV TEMP2,AX ;Now move the sum all of cubes in TEMP2.
;
MOV AX,TEMP1
MOV BX,TEMP2
CMP AX,BX ;Test to see if the number is armstrong.
JE ARMSTRONG ;Jump to ARMSTRONG if test is true.
CMP DIGIT1,10
JB INCDIG1
JMP STOP ;Stop if DIGIT1 was equal or greater than 10.
ARMSTRONG:
MOV CX,0
MOV CL,OUTLEN
LEA SI,OUTVAL
CLOUT:
MOV BYTE PTR[SI],020H
INC SI
LOOP CLOUT
;
MOV AL,OUTLEN
MOV AH,0
LEA SI,OUTVAL
ADD SI,AX
MOV BYTE PTR[SI],024H
DEC SI
MOV AX,BINFLD
NXTDIGIT:
CMP AX,10
JB LASTDIGIT
MOV DX,0
DIV CX
OR DL,030H
MOV [SI],DL
DEC SI
JMP NXTDIGIT
LASTDIGIT:
OR AL,030H
MOV [SI],AL
MOV AH,9
LEA DX,OUTVAL
INT 21H
CMP DIGIT1,10
JB INCDIG1
JMP STOP ;Stop if DIGIT1 was equal or greater than 10.
INCDIG1:
ADD DIGIT1,1 ;Add 1 to DIGIT1 to increment the digit.
CMP DIGIT2,10
JB INCDIG2
JMP SET2TO0
INCDIG2:
ADD DIGIT2,1 ;Add 1 to DIGIT2 to increment the digit.
CMP DIGIT3,10
JB INCDIG3
JMP SET3TO0 ;If DIGIT3 was equal or greater than 10.
INCDIG3:
ADD DIGIT3,1 ;Add 1 to DIGIT3 to increment the digit.
JMP START
SET2TO0:
MOV DIGIT2,0 ;Reset DIGIT2 back to 0 if it was greater than 9.
CMP DIGIT3,10
JB INCDIG3
JMP SET3TO0 ;If DIGIT3 was equal or greater than 10.
SET3TO0:
MOV DIGIT3,0 ;Reset DIGIT3 back to 0 if it was greater than 9.
JMP START
STOP:
;
NOP ;Dummy instruction - stop DEBUG here
MOV AH,4CH ;Return to DOS
INT 21H ;via service call 4CH
BEGIN ENDP ;End procedure
CODESG ENDS ;End code segment
END BEGIN ;End source code