Program to generate given output.

//program to generate following output.
/*
10
20
19
*/

#include <iostream>//header file

using namespace std;//to handle all standard characters/functions,reserved words  used in program. we do not use in turboc++ compiler.


int main()//main function
{
    int number=10;
    cout<<number<<endl;//prints 10
    number+=10;        //increses the value by 10
    cout<<number<<endl;//prints the 10
    cout<<--number;//prints 19 using prefix decrement operator.
    return 0;
}