What is the difference between (i++) and(++i)??

Answer 1

i++ and ++i are unary operators which perform increment operation.

Let us say, i = 0,
i++ => i = i + 1; That is the incrementation takes affect only after the current statement but
++i => i = 1 + i; Here the incrementation takes affect during the execution of that particular statement itself.

Answer 2

int i=1;
case 1:
cout<<i++; // outputs 1 because postfix I.e., value will be incremented after
case 2:
cout<<++i; // outputs 2 prefix I.e, incremented before

Answer 3

i++ is postfix
++i is prefix

Answer 4

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