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
In case of cout << ++c+c++; I would advise you to read this: https://www.sololearn.com/Discuss/3095184/?ref=app