whan c++ doesnot ignores line

Question

when c++ doesnot ignores lines ?if it ignores than why?

Answer 1

Any language ignores lines for two reasons; first line If line is commented then line is not even considered by compiler , second reason is that line is unreachable. Example for first;
int main()
{
/* I am comment ignore me*/
Do_tasks();
}

Example for second

int main()
{
while(1)
{
}
I_am_unreachable_task();

}

Answer 2

Thesmallest while(1) creates endless loop, If somehow conditio n is broken then It becomes reachable