interview ms1 robert move **

move 2
turn right
move 3
turn right
move 6

初始位置为(0,0),方向为north,求最后的位置。

string2char:  const char* t = second.c_str();

string2int:    #include <sstream>   string second;  cin>>second;  int steps;  stringstream(second)>>steps;

#include <iostream>
#include <string>
#include <sstream>
using namespace std;  

int main()
{
    int direction[4] = {0,1,2,3}; //north,east,south,west
    int x_weight[4] = {0,1,0,-1};    //if 0 north then 0,if 1 east then 1
    int y_weight[4] = {1,0,-1,0};

    string action;
    string second;
    int x_distance = 0;
    int y_distance = 0;
    
    int direction_present = 0;
    while(cin>>action>>second)
    {
        if(action == "move")
        {
            int steps; 
            stringstream(second)>>steps;
            x_distance += x_weight[direction_present]*steps;
            y_distance += y_weight[direction_present]*steps;
        }
        else
        {
            if(second == "left")
                direction_present = (direction_present + 3) % 4;
            else
                direction_present = (direction_present + 1) % 4;
        }
    }
    cout<<x_distance<<","<<y_distance<<endl;
    return 0;
}