As Cpp purely follows object oriented programming approach , first the entities or classes are developed based on the design or domain model, and the problem is addressed , but opposite in c
b=2 a=1 c=3 so b plus a =c
b+b+b+c+c+c+c =3b+4c
c + c + 2c + c + c = 6c
b + b + b + c + c + c + c = 3b + 4c
4c
c + c + c + c + c = 5 * c.
There are no "primary and secondary keys" in c and c plus plus.
3c
Top down and bottom up programming are two approaches or methodologies employed for designing structured programs in C.TOP DOWN APPROACHIn a top down approach a program(structured) is designed by using the top down methodology as follows..First the overall structure of the program is designed and it is defined and then it is followed by the designing of individual functions..BOTTOM DOWN APPROACHThe bottom down approach is just the opposite of the top down approach..ie, the program is designed by first designing the individual functions followed designing of overall program structure
There is no such thing as 'unix C++'.
They do exist in C and C++.
We learn it cause C++ are useful in programming. It is a language in programming. ********************************* Personally I like C better, there is much less code and fewer opportunities stuff up. C usually produces smaller programs that run faster. C++ tends to hide things from the programmer (you don't need to know approach) that makes debugging more challenging.