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Discussion of Problem 1038. Spell Checker

I don't know why i get WA! Please help me!
Posted by V&A SofT 30 Jun 2003 16:15
Here is my source:

#include <stdio.h>

int k;
int capital(char c); // if capital then return 1 if notcapital
return 0
             // if not letter return 2;
int mystrlen(char s[]);

int main(void)
{

   int i, j;
   int mistake = 0;
   char str[10000];

   gets(str);

   for(j = 0; j < mystrlen(str)-1; j++) if(str[j] > 64 && str[j] <
123) break;
   if(capital(str[j]) == 0) mistake++;
   i = j;
   for(; i < mystrlen(str) - 1; i++)
   {
      if(str[i] == '.' || str[i] == '!' || str[i] == '?')
      {
     for(j = i; j < mystrlen(str)-1; j++) if(str[j] > 64 && str
[j] < 123) break;
     if(capital(str[j]) == 0) mistake++;
     i = j;
      }
   }
   for(i = 0; i < mystrlen(str) - 1; i++)
   {
      if(capital(str[i-1]) == 2 && (str[i] > 64) && (str[i] < 123))
      {
     i++;
     for(j = i; capital(str[j]) != 2; j++)
     {
        if(capital(str[j]) == 1) mistake++;
     }
     i = j;
      }
   }
   printf("%d", mistake);
   return 0;
}

int capital(char c)
{
   if(c >= 65 && c <= 90) return 1;
   else if(c >= 97 && c <= 122) return 0;
   else return 2;
}

int mystrlen(char s[])
{

   for(k = 0; s[k]; k++);
   return k;
}