Reading multiple commands in one input in c++

Question

Here's what I have please tell me if I have to post everything. What I want is if they type " tcc fcc (enter)" I want cube.rotateTopNeg90() then cube.rotateFrontNeg90() to work on the cube thats printed. edit: Sorry, that's my question above, right now the commands only work one at a time (ie: 'tcc' (enter) 'fcc' (enter) ...) I want to it to be something like this ( 'tcc' 'fcc' 'tcc' 'tcc'....(repeat as many times as they like) (enter)) then each are processed consecutively. That's why I can't just use cin. I've asked this before here but I really don't know how to do it exactly.

class RubiksCube
{
    public:

        RubiksCube::RubiksCube() { /*stuff here*/  }

        void display() { /*prints the cube unfolded here*/  }

        void rotateTopNeg90() { /*moves top of the cube counterclockwise*/ }

        void RubiksCube::rotateFrontNeg90() { /*moves front counterclockwise*/ }
}

//main
int main(int argc, char *argv[])
{   
    RubiksCube cube;
    string s;  
    srand(time(0));
    while (1)
    { 
        string rotateTopNeg90 = "tcc";
        string rotateFrontNeg90 = "fcc";
        cube.display();
        cout << "COMMAND:";
        getline(cin,s);
        istringstream stream(s);

        if (s == rotateTopNeg90 )
            cube.rotateTopNeg90();

        if ( s == rotateFrontNeg90 )
            cube.rotateFrontNeg90();
    }
    return 0;
}

I think using cin << s; instead of getline(...) would do everything you want — kassak
– kassak, Commented Feb 25, 2013 at 13:30

111111 · Accepted Answer · 2013-02-25 13:37:21Z

0

I think the following would solve your problem; std::getline is taking in a whole line from std::cin which is more than you want as your operations work on a per token basis. std::cin tokenises on whitespace so op>> is better suited to your application.

const std::string rotateTopNeg90   ="tcc",
                  rotateFrontNeg90 ="fcc";

while(std::cin >> s) {
   if (s == rotateTopNeg90 )
        cube.rotateTopNeg90();
   else if ( s == rotateFrontNeg90 )
       cube.rotateFrontNeg90();
   cube.display();
}

answered Feb 25, 2013 at 13:37

111111

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