To work with console in C++, you must launch the iostream.h library
To Import data you are using cin, and for print you are using cout

Endl - This command signify start of new row.
Cout - Just print the result of var and string's at the exit. And every cout command signify start of new row or end of the extant row.
<< - This command is to separete two datas.
System("Pause") - When the code is performed by any Windows IDE, with this command you are pausing the program, to see result and then to close the program.

#include <iostream>
using namespace std;

void main(int argc, char *argv[])
{
    int a, b, c;
    cout <<"Enter value for a: ";
    cin >> a;
    cout <<"Enter value for b: ";
    cin >> b;
    c = a + b;
    cout <<"a + b = "<<c<<endl; //new row
    c = a * b;
    cout <<"a * b = "<<c<<endl;
    cout <<"Thank You."<<endl;
    system("PAUSE"); 
}