What does this code does with comments for each line please.? Explain the logic of the program how it achieves its purpose.
Control structures
Control structures are block of statements that analyze the value of variables and determine the flow of execution based on those values. When a program is running, the CPU executes the code line by line. After sometime, the program reaches the point where it has to make a decision on whether it has to go to another part of the code or repeat execution of certain part of the code. These results affect the flow of the program's code and these are called control structures.
Switch Statement
The switch statement is a key feature that is used by the programmers a lot in the world of programming and coding, as well as in information technology in general. The switch statement is a selection control mechanism that allows the variable value to change the order of the individual statements in the software execution via search.
What does this code does with comments for each line please.?
Explain the logic of the program how it achieves its purpose.
; TO DIPLAY MULTIPLE DIGITS
.model small
.386
.stack 100h
.data
by_base DD 16 ; BY_10 IS A 32 BITS REGISTER WITH AN INITIAL VALUE OF 10
SP_COUNTER DB 0 ; this is an 8 bits variable
.code
main proc
mov ax,@data ; These 2 commands are to set up the data segment pointer to memory
mov ds, ax
L0:
MOV EAX, 255
LP1:
MOV EDX,0
DIV BY_base ; EAX/(BY_base)
PUSH DX ; PUSH THE REMINDER INTO THE STACK VIA THE DX REGISTER
INC SP_COUNTER
CMP EAX, 0
JNZ LP1
LP2:
POP DX
CALL DISPLAY
DEC SP_COUNTER
JNZ LP2
MOV DL, -8
CALL DISPLAY
MOV EDX, BY_BASE
CALL DISPLAY
MOV DL, -7
CALL DISPLAY
DEC BY_BASE
CMP BY_BASE, 1
JNZ L0
mov ax, 4c00h ; terminate the program
int 21h
display proc ; FOR A SINGLE DIGIT ONLY
CMP DL, 10
JS SHORT SKIP1
ADD DL, 7
SKIP1:
ADD DL, 30H
mov ah, 6
int 21h
ret ; return
display endp
main endp
end main
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