By working from the inside out. Since all functions and data types must be forward declared, it makes sense to design these first. This means you must break the problem down into its component parts, identify the key classes and other data types required by your program and design them first.
All C++ keywords are reserved, as are all variable and function names that begin with two leading underscores.
b+b+b+c+c+c+c =3b+4c
c + c + 2c + c + c = 6c
b + b + b + c + c + c + c = 3b + 4c
To begin with you have to have intuition and Logic. Then you have to know Mathematics as well as computers to a basic level !
4c
c + c + c + c + c = 5 * c.
There are no "primary and secondary keys" in c and c plus plus.
3c
There is no such thing as 'unix C++'.
They do exist in C and C++.
C plus is between 3 and 3.2. C = 75% 0% < Plus < 5% 75%+0% < C Plus < 75%+5% 75 < C Plus < 80% 75%*4 < C Plus < 80% * 4 (3/4)*4 < C Plus < (4/5) * 4 3 < C Plus < 16/5 3 < C Plus < 3.2