increment operator

Prefix (++i): Increment first, then use the value.

Postfix (i++): Use the value first, then increment

int i = 5;

int j = ++i;  // i is incremented to 6, then assigned to j

i = 6

j = 6

int i = 5;

int j = i++;  // i is assigned to j first, then incremented

i = 6

j = 5

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