Mix (C++ and Assembly) Program to Perform Signed & Unsigned Multiplication and Division

#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int a,b,c,j;
char m,Y,N,y,n;
do
{
cout<<"1.unsigned multiplication:"<<"\n";
cout<<"2.signed multiplication:"<<"\n";
cout<<"3.unsigned division:"<<"\n";
cout<<"4.signed divsion:"<<"\n";
cout<<"Enter ur choice";
cin>>j;
 switch(j)
{
case 1:
{
cout<<"Enter the first no.:"<<"\n";
cin>>a;
cout<<"Enter the second no.:"<<"\n";
cin>>b;
if(a<0||b<0)
{
cout<<" only positive no.s are accepted ";
}
else
{
asm mov ax,a;
asm mov bx,b;
asm mul bx;
asm mov c,ax;
cout<<"result="<<c<<"\n";
break;
}
}
case 2:
{
cout<<"Enter the first no.";
cin>>a;
cout<<"Enter the second no.";
cin>>b;
asm mov ax,a;
asm mov bx,b;
asm mul bx;
asm mov c,ax;
cout<<"result="<<c<<"\n";
break;
}
case 3:
{
cout<<"Enter the first no.";
cin>>a;
cout<<"Enter the second no.";
cin>>b;
if(a<0||b<0)
{
cout<<" only positive no.s are accepted ";
}
else
{
asm mov ax,a;
asm mov bx,b;
asm div bx;
asm mov c,ax;
cout<<"result="<<c<<"\n";
break;
}
}
case 4:
{
cout<<"Enter the first no.";
cin>>a;
cout<<"Enter the second no.";
cin>>b;
asm mov ax,a;
asm mov bx,b;
asm idiv bx;
asm mov c,ax;
cout<<"result="<<c<<"\n";
break;
}
}
 cout<<"Do you want to continue?(Y/N):\n";
 cin>>m;
}
while (m=='y'||m=='Y');

getch();
}
/*output:
1.unsigned multiplication:
2.signed multiplication:
Enter ur choice2
Enter the first no.-2                                                           
Enter the second no.5                                                           
result=-10                                                                      
Do you want to continue?(Y/N):                                                  
Y                                                                               
1.unsigned multiplication:
2.signed multiplication:                                                        
Enter ur choice1                                                                
Enter the first no.:                                                            
5                                                                               
Enter the second no.:                                                           
7                                                                               
result=35                                                                       
Do you want to continue?(Y/N):                                                  
N
*/

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