CHAPTER 12 Arrays 7 2 4

第七题

题意：


翻译：

第二题

题意：


翻译：

//可以加上头文件用来存放枚举类型来实现打印画的材质
#include<iostream>
#include<string>
#include<cctype>
#include<fstream>

using namespace std;

struct Size
{
    
    
	int len;  //10cm
	int weid; //10cm
};

struct gallery
{
    
    
	string ArtistName;
	string Title;
	Size s;
};

ofstream fout;

void Medium(string);

int main()
{
    
    
	string artist;
	string med;

	gallery artist1;
	artist1.ArtistName="CuiXinChun";
	artist1.s.len=10;
	artist1.s.weid=10;
	artist1.Title="RGZN NB!!!";

	cout<<"please enter the name of the paintings' artist"<<endl;
	cin>>artist;
	if(artist=="CuiXinChun")
	{
    
    
		cout<<"The name is "<<artist1.ArtistName<<endl;
		cout<<"His painting is "<<artist1.Title<<endl;
		cout<<"The painting's lengh is "<<artist1.s.len<<endl;
		cout<<"The painting's weigth is "<<artist1.s.weid<<endl;

	}
	cout<<"please enter the name of the paintings' medium"<<endl;
	cin>>med;
	Medium(med);//输入到文件了，而且只能输入一次
	
	
	while(1);
	return 0;
}

void Medium(string med)
{
    
    
	fout.open("Art.txt");
	if(!fout.is_open())
	{
    
    
		cout<<"NO FILE"<<endl;
	}
	switch(med[0])
	{
    
    
	case 'o':
		fout<<"oil"<<endl;
		break;

		case 'w':
		fout<<"watercolor"<<endl;
		break;

		case 'p':
		fout<<"pastel,print,"<<endl;
		break;

		case 'a':
		fout<<"acrylic"<<endl;
		break;

		case 'c':
		fout<<"color photo"<<endl;
		break;

		case 'b':
		fout<<"black and white photo"<<endl;
		break;


	}
	fout.close();
}

第四题

1. Programming Problems 第4 题回文（Palindrome）的判断。在本题扩展了回文的定义的情况下，从性能和算法等方面考虑该题目的进一步改进，并与第六章的实验题目对比。
   题意：
   
   译文：
   

代码如下：

//This programm reads in a string from the KBD, AND ENDS AT reading a special CHAR
//AND JUDGE WHETHER IT IS A PALINDROME ACCORDING TO THE EXTENDENDED DEFINITION 
//May 30, 2010 
#include<iostream>
#include<string>
#include<cctype>
using namespace std;

int main()
{
    
     
  int i,j,k=0,count,length;
  i=0;
  count=0;
  string::size_type len;
  string  inputstr;
  char StrReadIn[30];
  char StrPured[30],c[30];
  
  //Enter a string AND ENDS AT reading a special CHAR,here '#'
  cout<<"Enter string, '#' to end:";
  
  //getline(cin,a);
  cin.get(StrReadIn[i]);
  cout<<StrReadIn[i];
  while ((i<30) && (StrReadIn[i]!='#'))
  {
    
    	  cin.get(StrReadIn[++i]);
      cout<<StrReadIn[i];
  }
  cout<<"The length   is :" <<i<< endl;
  
  j=0; k=0; 
  
  while(j<i)
  {
    
     
    if ((StrReadIn[j]<='Z' && StrReadIn[j]>='A')||
        (StrReadIn[j]<='z' && StrReadIn[j]>='a')||
        (StrReadIn[j]<='9' && StrReadIn[j]>='0'))
       StrPured[k++]=StrReadIn[j++];
    else j++;
  }
  cout<<"Pure String is :"<<endl;

  for(j=0;j<k;j++)
	  cout<<StrPured[j];

  cout<<endl<<"Reverse string:"<<endl;
  for(j=k-1;j>=0;j--)
	  cout<<StrPured[j];
  
  for(i=0,j=k-1;i<j;i++,j--)
    if(StrPured[i]!=StrPured[j])
	{
    
     
	 cout<<" It is not a palindrome."<<endl;
     return 0;
    }  
    cout<<endl<<" It is a palindrome."<<endl;
    
   return 0;
}

运行结果：

P508 4

题意：