why we INITIALISE in for loop like int i=1(must with data type) instead we can initialise outside of loop ex- int i=1 C++

Answer 1

Yes. You can as you needed.
int i;
for(I=0;I<5;I++)
{
..
}

for(int I=0;I<5;I++)
{
..
}

int I=0;
for( ; I<5;I++) {.. }

for(;;) {.. }

All valid, but difference is if you declared inside loop then, it will not exist outside of loop..

Answer 2

You can do as you like

Answer 3

Thnx