作业4

+#include<iostream>
 +#include<fstream>
 +#include<cstring>
 +#include<string>
 +using namespace std;
 +
 +struct Word{      
 +    int Count;
 +     Word() :b(""), Count(0) {}  
 +    string b;
 +    char *p;
 +};
 +
 +
 +void exchange(Word &word) 
 +{  
 +    string tb = Word.b;  
 +    int tCount = Word.Count;  
 +    Word.b = b;  
 +    Word.Count = Count;  
 +    b = b  
 +    Count = tCount;  
 +}  
 +
 +Words examine[100];
 +
 +void judge(char x[])     
 +{   int k = 0;
 +    while (x[k] != ‘\0‘)
 +    {
 +        if (x[k] >= ‘A‘&&x[k] <= ‘Z‘)
 +            x[k] = x[k] + 32;
 +        k++;
 +    }
 +}
 +
 +int identify(char a[])   
 +{   int m=(strlen(a)>=4)?1:0;
 +    int n=(a[0]>=‘a‘&&a[0]<=‘z‘)?1:0;
 +    if(!m||!n)
 +        return 0;
 +    else
 +        while(a)
 +        {   for(int i=1;;i++)
 +           {  
 +               if(!(a[i]>=‘a‘&&a[i]<=‘z‘)||!(a[i]>=‘0‘&&a[i]<=‘9‘))
 +                        return 0;
 +               else
 +                        return 1;
 +           }
 +        }
 +}
 +
 +void sortworddown(Word * words, int size) 
 +{  
 +    for(int i=0;i<size;i++)  
 +    {
 +        for(int j=0;j <size-1;j++)  
 +        { 
 +            if(words[j].Count<words[j+1].Count)  
 +            {  
 +                words[j].exchange(words[j+1]);  
 +            }  
 +        }  
 +    }  
 +}  
 +
 +int counts(char str[],int num)  
 +{   for(int j=0;j<num;j++)
 +    {
 +
 +        if(!strcmp(str,examine[j].p))
 +             examine[j].count++;
 +        else
 +            return 0;
 +    }
 +}
 +
 +
 +int main()
 +{   char c[200];
 +    ifstream fin("D:/A_Tale_of_Two_Cities.txt");  
 +    for(int f=0;;f++)
 +        fin>>c[f];
 +    fin.close();
 +    cin.get();
 +    judge(c);
 +    const char *s= ",¡±¡°.‘‘!?";    
 +    char *q;
 +    int n=0;
 +    q = strtok(c, d);
 +    sortwordown(words, wCount);  
 +    while (s)
 +    {
 +        if (identify(s))
 +        {
 +            
 +                strcpy(examine[n].p,s);
 +                n++;
 +            
 +        }
 +
 +       
 +       s=strtok(NULL,d);
 +    }
 +    cout<<"Enter a word to find...\n";    
 +    char r;
 +    cin>>r;
 +    int t=0;
 +    while(!strcmp(examine[n].p,r)) 
 +    {   
 +        t++;
 +    }
 +    cout<< examine[n].p << ":" << examine[n].count << ‘\n‘; 
 +    return 0;
 +}