Question

How can I write a program to check the arguments in the terminal are correct?

For example, if I have a program hello.cpp and I want to call it as:

./hello yes 10

I want the program to make sure that the first argument is yes or no and the second argument is a number between 1-10. So how can I read these arguments into my program to do the checking?

Thanks!

Answer 1

Command line arguments are passed as a count and individual strings in the argc and argv arguments to main().

int main(int argc, char *argv[])
{
   ...
}

Simply check the value in argc and the strings in argv for the appropriate values.