This C++ program checks whether a given array of five integers is a palindrome (i.e., reads the same forwards and backwards) using inline 8086 assembly instructions. It utilizes basic comparison instructions and control flow to determine equality between symmetric elements.
#include<iostream.h>
#include<conio.h>
void main()
{
int nos[5], x, y;
cout << "\n Enter 5 numbers:";
int i, j;
for (i = 0; i < 5; i++) {
cin >> nos[i];
}
for (i = 0, j = 4; i < 3; i++, j--) {
x = nos[i];
y = nos[j];
_asm {
mov ax, x
mov bx, y
cmp ax, bx
jnz no
}
}
cout << "\n Array is Palindrome.";
goto end;
no:
cout << "\n Array is not palindrome.";
end:
getch();
}
This C++ program demonstrates how to search for a specific element within an array of 10 integers using 8086 assembly instructions embedded inline. The program uses the cmp and jz instructions to perform the comparison and detect a match.
#include<iostream.h>
#include<conio.h>
void main()
{
int nos[10], j, t;
int i, p;
cout << "\n Enter 10 numbers:";
for (i = 0; i < 10; i++) {
cin >> nos[i];
}
cout << "\n Enter number to be searched:";
cin >> j;
for (i = 0; i < 10; i++) {
p = i;
t = nos[i];
_asm {
mov ax, t // Load current array element
mov bx, j // Load number to be searched
cmp ax, bx // Compare current element with target
jz out // If match found, jump to output
}
}
cout << "\n No is not found.";
goto end;
out:
cout << "\n Number is found at " << p + 1 << " th position";
end:
getch();
}
While high-level languages like C++ are well known for abstracting away low-level operations, sometimes it’s beneficial to peek under the hood to see how things really work at the machine level. In this post, we’ll explore a simple C++ program that incorporates inline assembly to add two 16-bit numbers.
#include<iostream.h>
#include<conio.h>
#include<stdio.h>
void main()
{
clrscr();
int a,b,c;
cout<<"Enter First Number:";
cin>>a;
cout<<"Enter Second Number:";
cin>>b;
asm mov ax, a // Move first number into AX
asm mov bx, b // Move second number into BX
asm add ax, bx // Add BX to AX (binary addition)
asm mov c, ax // Move result into variable 'c'
cout<<"Result:";
cout<<c;
getch();
}
While high-level programming languages like C++ make arithmetic operations incredibly simple, delving into inline assembly offers valuable insights into how the CPU processes instructions under the hood. Hence in this post, we’ll walk through a simple program that uses both C++ and inline assembly to add two integer values. Additionally, we will carry out decimal adjust after addition.
While modern high-level languages like C++ abstract away many low-level operations, sometimes it’s useful to dive into assembly-level instructions for greater control and understanding. This example demonstrates subtraction using inline assembly in C++, with the addition of the DAS instruction to adjust the result for Binary Coded Decimal (BCD) operations.
#include<iostream.h>
#include<conio.h>
#include<stdio.h>
void main() {
clrscr();
int a, b, c;
cout << "Enter First Number:";
cin >> a;
cout << "Enter Second Number:";
cin >> b;
asm mov ax, a // Move 'a' into AX
asm mov bx, b // Move 'b' into BX
asm sub ax, bx // Subtract BX from AX
asm das // Adjust AX for BCD subtraction
asm mov c, ax // Store result in 'c'
cout << "Result:";
cout << c;
getch();
}
While modern high-level languages like C++ abstract away many low-level operations, sometimes it’s useful to get closer to the hardware to understand how things work under the hood. This example demonstrates how to subtract two 16-bit numbers using inline assembly in a simple C++ program.
#include<iostream.h>
#include<conio.h>
#include<stdio.h>
void main() {
clrscr();
int a, b, c;
cout << "Enter First Number:";
cin >> a;
cout << "Enter Second Number:";
cin >> b;
asm mov ax, a // Move 'a' into AX
asm mov bx, b // Move 'b' into BX
asm sub ax, bx // Subtract BX from AX
asm mov c, ax // Store result in 'c'
cout << "Result:";
cout << c;
getch();
}
This blog post will guide you through a C++ program that performs the addition of two numbers using inline assembly. While modern compilers provide high-level arithmetic operations, understanding inline assembly can help in optimizing performance and understanding low-level interactions with the CPU. Let’s explore this step-by-step!
#include<iostream.h>
#include<conio.h>
#include<stdio.h>
void main()
{
clrscr();
short int a, b, c;
cout << "Enter First Number: ";
cin >> a;
cout << "Enter Second Number: ";
cin >> b;
asm mov ax, a
asm mov ah, 00h
asm mov bx, b
asm mov bh, 00h
asm add al, bl
asm mov c, ax
cout << "Result: ";
cout << c;
getch();
}
