[公告] 計程期中考題目

[jtouch (Woodstock)]

※ [本文轉錄自 NTUCivilSA 看板]

作者: jtouch (Woodstock) 看板: NTUCivilSA
標題: [公告] 計程期中考題目
時間: Mon May  2 17:32:27 2005


[Q1] (15%) Please write down the output of the following codes
(a)     (5%)
#include<iostream.h>
void main() {
 int i,j;
   cout<<"start here!\n";
   for(i=0;i<7; i++)
       for(j=i;j<10; j++, i++)
       cout<< ++i<<j++;
       j++;i++;
   }

(b) (5%)
#include<iostream.h>
void main() {
 int i,j;
   cout<<"start here!\n";
   do
     {
       if(i=1) cout<<"b";
       for(j=i;j<10; ++j,i++)
       cout<< i++<<j++;
       if(i++>8) break;

      }while(2);
   }

(c) (5%)
#include <iostream>
#include <iomanip>
using namespace std;

long nextFib();
static long last = 1; // 這是指定last為全區(global)變數的指令
static long lastButOne = 3;// 這是指定lastButOne為全區(global)變數的指令
int main()
{
  cout << endl << "The output is:" << endl;
  for(int i = 0 ; i < 10 ; i++)
  {
    if(i % 5 == 0)
      cout << endl;
    cout <<  nextFib();
  }
  cout << endl;
  return 0;
}

long nextFib()
{
  long next = last + lastButOne;
  lastButOne = last;
  last = next;
  return last;
}
[Q2] (20 point) What is the output of the following program?
#include <iostream.h>
#define Y  4
#define X  Y/3 + Y*3

void main()
{
  int trick(int&, int, int&);
  int i, j, m = X*Y, n = Y*X, k=X, var1;
  float var2;

  cout<<"Start here:\n ";
  var1 = m/n; cout<<"line1:"<< var1<<endl;
  var2 = trick(m,k,n);
  cout<<"line2:"<<var2<< m<< n<< k <<endl;
  var2 = trick(m,k,n);
   cout<<"line3:"<<var2<< m<< n<< k <<endl;
  for(i=0; i<10; ++i) {
    if(i==3) {
      cout<<"continue\n";
      continue;
    }
        j=0;
    for(j; j<i; j++) {
          m = j%2;
      if(m) {
        if (m = -1) cout<<"NG!";
                cout<<"break\n";
        break;
      }
      else
          { if (m = 0) cout<<"OOPS!";
                cout<<"i=" << i++ <<", j="<< j<< endl;
          }
    }
  }
  cout<<"i+j="<< i+j <<endl;
}
int trick(int &x, int  y, int & z)
{
  int w=5;

  w=y;y=x;x=w;
  return(++z);
}

[Q3] [15 Points]
寫程式:列印由1,2,3,4 這四個數字組成的所有可能的四位數，
並算出總共可有多少個數? (如1111, 1234, 2222, 2121, 3232, 4141, …..)


 [Q4] (20point)
Write a C++ program to compute

        3!   5!   5!         (2n+1)!     (2n+1)!
        － X － X － X ... X －－－－ X －－－－
        4    4    6            2n        2n+2

After allowing the user to input the value of n,
the program should report the computed result.

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