常用常量

 

月份天数

int ds[]={0,31,28,31,30,31,30,31,31,30,31,30,31};

　　

星期

string weeks[]={"Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"};

 

4个方向增量

int dx[]={0,-1,0,1};
int dy[]={1,0,-1,0};

　　

8个方向增量

int dx[]={0,-1,-1,-1,0,1,1,1};
int dy[]={1,1,0,-1,-1,-1,0,1};

　　

象棋之“马走日”

int dx[]={-1,-2,-2,-1,1,2,2,1};
int dy[]={2,1,-1,-2,-2,-1,1,2};