While is an interesting concept, have you every though about it? Its an abstract concept, like zero , that probably wasn’t formally enunciated until well after the invention of written language, even though everybody sort of knew about it. While means that when certain conditions exist other stuff is happening. It gets even more complicated to think about when you realize that the two elements (the certain conditions and the other stuff) may be dependent or independent of each other
While is very important in computer programming. Here is an example of a while loop in the C language.
int x = 0;
while (x < 5)
printf ("x = %dn", x);