Does there exist any way to make the command line arguments available to other functions without passing them as arguments to the function?

What IF function you mean? (In C there is an 'if' statement.)

If you are talking about F(x)=something then the argument is whatever value is inside the F() or F of whatever, be it x,y,5,or anything else. ExampleF(x+1) =x^2 or F of x+1 = X^2=(x+1)^2 [substitute...

Yes, qsort in stdlib.h is an example.

It is called callback function. For an example see the qsort function.

Command line arguments are provided at the time of running the program. Example: Suppose that your program needs input name and its value then running it from commandline(DOS prompt) you provide the...