[心得] 計程Quiz答案

[andrewchiang (Andrew)]

以下由本人隨意豪洨完成的

答案並非為官方公佈之解答

如果答案有錯請麻煩推文指教

給大家當參考~

請記得開燈喔～

1.
　(i)  x - x*y + y - 5
  (ii) y = 0.2*x*x + (b-a)*x /(b+a) + a/b

2.
  First, you learn it because it's fun.
  Second, you learn programming language so you can express your
  ideas to accomplish task with computer.

3.

#include <fstream>
using namespace std;

int main()
{
  ofstream fout("output.txt");
  fout << "Einstein said \"make everything as simple as possible,";
  fout << " but not simpler.\"" << endl;
  fout << "Niels Bohr said \"prediction is very difficult, especially of ";
  fout << "the future.\"" << endl;
  fout.close();
  return 0;
}

4.

#include <iostream>
using namespace std;

int main()
{
  int input;
  cin >> input ;
  if (input%2==0)
          cout <<"This is an even number."<< endl;
  else
      cout <<"This is an odd number."<< endl;
  return 0;
}


5.

#include <iostream>
using namespace std;

int main()
{
        long double i, n, x, sum;
        const long double PI = 3.14159265358979323846243;
        cout << "Please input n: ";
    cin >> n;
        cout << endl;
    for (i=0; i<=n; i++)
        {
                x = (i - 0.5)/n;
                sum = sum + 4/(1+x*x)/n;
        }
        cout <<"Pi estimate =" << sum <<endl;
    cout <<"Percentage error = " << (sum - PI)*100 <<"%" << endl;
        return 0;


}



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◆ From: 140.112.241.112
推 ivia:還可以這樣討論的喔= =
推 c040723:交出去的時候會有很多一樣的答案吧(茶)
→ andrewchiang:這是模擬考題啊
推 leethomas:讓我想起高中電腦課的時候  大家都在家族PO答案XD
推 shamangary:實在是太強啦
推 tomroy:這不是應該低調嗎?
→ andrewchiang:    D調
→ joad:" Why you learn C++,Guys? "  " Because I'm BORING!! "
※ 編輯: andrewchiang    來自: 140.112.241.112      (03/18 23:37)
推 LonelyDream:我把你第五題輸入9999999999run超久
→ andrewchiang:是跑不動...
推 aa1052v:低調不太成功 要每行都打喔
→ andrewchiang:懶得打...