Re: [問題] 用C++寫程式
※ 引述《asdf12345 (= =!!)》之銘言：
: : 5.利用某一迴圈敘述輸入20個整數,計算輸入的整數有多少個奇
: : 數,有多少個偶數,這些奇數或偶數的總合與平均值又各為多少
: : ?
第五題:
我只做了偶數部份 奇數就請你自己想辦法吧
#include<iostream>
#include<algorithm>
#include<numeric>
using namespace std;
int main() {
int a[20];
for(auto i=0; i<20; i++) cin >> a[i];
auto f = [](int x){return !(x&1);};
cout << count_if(a, a+20, f) << "個偶數" << endl;
cout << "總和: "
<< accumulate(a, a+20, 0, [f](int x, int y){return f(y)?x+y:x;})
<< endl;
cout << "平均: "
<< accumulate(a, a+20, 0, [f](int x, int y){return f(y)?x+y:x;}) /
(double)count_if(a, a+20, f)
<< endl;
}
--
※ 發信站: 批踢踢實業坊(ptt.cc)
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