Arithmetic assignment and decrement

Questions:

Write a program that generates the following output:

10

20

19

Use an integer constant for the 10, an arithmetic assignment operator to generate the 20,and a decrement operator to generate the 19.

Code:

// exercises arithmetic assignment and decrement

#include <iostream>

using namespace std;

int main()

{

       int var = 10;

       cout << var << endl; // var is 10

       var *= 2; // var becomes 20

       cout << var-- << endl; // displays var, then decrements it

       cout << var << endl; // var is 19

       return 0;

}

Output:

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