about --n

[masonddd]

Can any briefly tell that the difference between --n and n--

another thing

n=5
while (--n>0)
{if(n==2)
cout<<n;
break;
}
cout<<"endloop";

what would be the output of about program and how times the loop runs?

[dandy]

why do you ask something that you can try on compiler yourself?

[AbstractionAnon]

--n means decrement n before using it in an expression.
n-- means decrement n after using it in an expression.

In your example, the first time through the loop n is decremented from 5 to 4 before comparing to zero.

what would be the output of about program and how times the loop runs?

Try it and find out.