来源: http://taoti.tl100.com/read-1339511.html
int GetNum(int n){
if(n) return 2;
return n+GetNum(n-1)
}
来源: http://taoti.tl100.com/read-1339511.html
int GetNum(int n){
if(n) return 2;
return n+GetNum(n-1)
}
转载于:https://www.cnblogs.com/wjw334/p/3630023.html