Charting is not a native function of the C language. Therefore, the only way to do this is to use a 3rd party package for graphing.
Even if you do not use a 3rd party package to create a line...
A pie chart is called a pie chart because it looks like a piece of pie cut into sections... It ISN'T called a cake chart, because a cake chart would be to controversial. - iow (in other words) - a...
One view: Because they just are. Pi is a Greek letter and most mathematics came from the Greeks. Another view: According to wikipedia, it is spelled the same as "pie" because it is named for its...