The question should still exist, however it could have been slightly more direct. I understand how having multiple functions and variables withing a single .cpp work. I know extra functions must be called, from within the main function, to be 'executed'. I, however, did not understand how things would work having multiple .cpp files all with their own "main functions" because I had never been instructed, read about, or tried this before. Cedric Moonen understood exactly what I was doing wrong, made mention of it, and my confusion of how having multiple .cpp files work. I now understand it's used for organizational purposes, and works no differently that having multiple functions within one file. Nevertheless I appreciate the attempt at helping me.
I, however, did not understand how things would work having multiple .cpp files all with their own "main functions" because ...
After I told that in all a program (no matter with how many files) names bust be unique, the question become meaningless:
What is the meaning (in mathematical sense) of the words "main functions"?
If you link more file having each one a main function, the result is a linker error.
You have never been instructed about how to do that, simply because it cannot work.
Anyway, it doesn't matter how: the important thing is that you understood what was the problem.
After long search on net i found formula.
I have find formula Permutations with repetition on net
n^r Where n=length of string and r=combination choice
I want to make combination according to this formula n^r.
According to this formila n^r=9 combination possible here like this
Here i am trying but stuck in inner loop.
for( int k=0;k<nl;k++)
//Here i am stuck please help me