野餐要搬椅子,每人一把。写 enough_chairs(guests, chairs):guests 是来的人,椅子够返回 true,不够返回 false。没有人来也算够。
enough_chairs({"Amy", "Bao", "Coco"}, 4)→Trueenough_chairs({"Amy", "Bao", "Coco"}, 2)→Falsebool enough_chairs(const vector<string> &guests, int chairs)#include <string>
#include <vector>
using namespace std;
bool enough_chairs(const vector<string> &guests, int chairs) {
int people = 0;
// 在这里写:people 等于名单里有几个人
return people <= chairs;
}
写好了先点「运行」试试示例,没问题再点「提交」。