Giving "main" and argument???

[Blessman11]

what does it mean when an argument is inserted inside main like this?

int main(int argc, char **argv);

[Disch]

That's the commandline used to run the program.

If, for example you run the program with the following:

myprog.exe -option filename.txt

then argc and argv would be the following in main:

argc==3
argv[0]=="myprog.exe"
argv[1]=="-option"
argv[2]=="filename.txt"