Question

I have a program that accepts input from the command line. While all of the available commands are one string, several of the commands require a secondary string to further define the action.

e.g. “end” is one command, and “add foo” is a second.

My code handles the 2 string inputs fine, but when I try to access a single string command (such as “end”) the program waits for more input instead of acting immediately.

Is there some way I can get the program to read in exactly one line (which may have up to two strings) rather than the way it is now?

Here’s how it’s currently implemented:

while(1)
    {
        scanf("%s%s", commandString,floorPath);

            if(!strcmp(commandString,"end") return;
            //I've got several of these as an "if / else", but there's no
            //need to reprint them here.

    }

Answer 1

Read the first string alone, and depending on the input decide if there is a need to read another string or not.

while(1)
{
    scanf("%s", commandString);
    if (requiresAnotherString(commandString))
    {
         scanf("%s", floorPath);
         // handle two string command
    }
    else
    {
         // handle one string command
    }
}