1.  The UNIX kernel - that pretty much the entire Internet runs on - is written in C. Web servers are written in C, and if they're not, they're written in Java or C++, which are C derivatives, or Python or Ruby, which are implemented in C.

2.  They usually have several friends , who are c convenience friends indeed .

3.  Figure 2\

4.  There is another formula to restrict the value of a, b and c: 1/a+1/b+1/c=t.

5.  Well, with these two formulas and some knowledge on inequality, we can calculate the maximum of (E/k) and the corresponding value of a, b and c (the value of E/k changes in response to the changes of a, b and c).

6.  That is to say, Q and a, b, c are dynamic, and as a result we will get a series of statistics.