Asad Abbas <cyberstuden...@...> wrote:
>
> Consider the following code
>
> main()
> {
> for(int i=1,m=9;++i< 4;)
> for(int j=1;j<4;j++)
> for (int k=1;k++<4;)
> cout<<(i==3? ++m+1:m-- );
> getch();
> }
>
> Its output: (on Dev C++)
>
> 9876543212345678910
>
> ---
>
> I could not understand when 'i' is not equal to 3 'm--' is
> executed so value of m is decremented by '1' (thats right)
> But when i==3 and ++m+1 is executed then why the value of m
> is incremented by 1 only?
> (++m+1) This should increment the value of m by 2 :(
Why do you think that?
(++m+1) is just (++m) + 1
> Where am i Wrong?
I'm suprised the program even compiled, but let's rewrite it
to something that conforms to C++, and that shows you each
step...
#include <iostream>
using namespace std;
int main()
{
for(int i = 1, m = 9; ++i < 4; )
for(int j = 1; j < 4; j++)
for (int k = 1; k++ < 4; )
{
cout << i << ' ' << j << ' ' << k;
cout << ": m before = " << m;
cout << " - " << (i == 3 ? ++m + 1 : m--);
cout << " - m after = " << m << '\n';
}
}
--
Peter
