What is the difference between post increment and pre increment operator?

Question

What is the output of the code...
int c=2;
cout<<++c;
cout<<++c+c++;

Answer 1

The difference is:
Pre incrementing increment the variable and then use it
Post incrementing uses the variable and then increment it

Example:

c = 2;
cout << ++c;
cout << c;

Output:
3
3

c = 2;
cout << c++;
cout << c;

Output:
2
3

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