command line arguments are used when we want to pass some parameters to the main() function from outside the program . The first argument is an integer which gives the count of the parameters . next argument is a char array which contains name of the program and other command line arguments which we need to pass to the program. We can read those parameters from that character array. In the given statement int main(int ac,char *av[]) ac indicates argument count and av char array holds the actual arguments av[0] points to the name of program and from av[1] ,they points to the actual arguments that being passed
