How!!

Question

[C++]
int i=5;
for(int i=0;i<7;i++)
{}
cout<<i;
Output=5

Answer 1

If you were wondering why the output is 5 instead of 7, the answer was that you have two variables named <i>, one outside the for loop (initialized to 5), and the other one was declared within the for loop scope (initialized to zero). You were incrementing the <i> that was declared inside for loop, which will not affect the first <i> that was declared outside the for loop.
Hth, cmiiw