单词计数，杭电0j-2072

 1 #include<stdio.h>
 2 #include<string.h>
 3 
 4 char words[1010][50];
 5 char str[1010];
 6 int n;
 7 
 8 void getword(char str[])
 9 {
10     int flag = 0;
11     int cnt = 0;
12     n = 0;
13     int i = 0;
14     char word[50];
15     int len = strlen(str);
16     str[len+1] = ‘\n‘;
17     str[len] = ‘ ‘;
18     for(; i<=len; i++)
19     {
20         if(flag == 0)
21         {
22             if(str[i] != ‘ ‘)
23             {
24                 word[cnt++] = str[i];
25                 flag = 1;
26             }
27         }
28         else
29         {
30              if(str[i] ==  ‘ ‘)
31              {
32                 word[cnt] = ‘\0‘;
33                 strcpy(words[n++], word);
34                 cnt = 0;
35                 flag = 0;    
36              }
37             else
38                 word[cnt++] = tr[i];                
39         }
40     }   
41 }
42 
43 int count()
44 {
45     int i, j;
46     int ntr = 0;
47     for(i=0; i<n; i++)
48     {
49         int flag = 1;
50         for(j=i+1; j<n; j++)
51             if(strcmp(words[i], words[j])==0)
52                 flag=0;
53         if(flag)
54              ntr++;            
55     }   
56     return ntr;
57 }
58 
59 int main()
60 {
61     while(gets(str) && strcmp(str, "#"))
62     {
63         getword(str);   
64         printf("%d\n", count());
65     }
66     return 0;
67 }