I tried everything suggested in the discussion.
Each test works, but when I submit, I get WA2.

Can you please add more tests?

Where is my mistake?
I have WA on test 2!!!

#include <iostream>
using namespace std;
int main ()
{
    char c;
    int i,n,br=0,b=0,l=1;
    while (cin>>c)
    {
        if (c=='!'||c=='?'||c=='.') l=1;
        else
        {
            if (c>='a'&&c<='z')
            if (l==1) br++;
            if (c>='A'&&c<='Z')
            if (l==0) br++;
            l=0;
        }
        if (c=='!'||c=='?'||c=='.')
        {
            if (br>0) b+=1;
            br=0;
        }
    }
    cout<<b<<endl;
    return 0;
}

there are 2 details which are not mentioned in the document.

1. number(0-9) is also the splitor of word, so word can only contained characters,a-z.
   such as A0B is 2 words.
2. Next line starts one new word, but not always starts one new sentence, such as
   this is one sentence, but
   is splited to 2 lines.

Help me!!!

WA#3:
   new word start after '\n';(e.g.  Abc'\n'new_word_here)

WA#10
   new word start after number; (e.g. 909090new_word_here)

please give the code to java
please give the code to java

I had WA#3 because of how I was reading the input in C:
while (gets(buff) != NULL) {
    int i = 0;
    while (buff[i] != '\0') {
        // process char by char
        i++;
    }
}

Changed to:
while ((c = getchar()) != EOF) {
    // process char by char
}

And it works AC!!!

Please help me with WA#10. Can you give me the test in which my program outputs this WA.

program Project1;
{$LONGSTRINGS ON}
{$APPTYPE CONSOLE}

uses
  SysUtils;

var c,lc:char;
    ans:longint;
    b:boolean;

begin
  {$IFNDEF ONLINE_JUDGE}
  reset(input,'input.txt');
  rewrite(output,'output.txt');
  {$ENDIF}
  ans := 0;
  b := false;
  c := #1;
  while not eof(input) do
  begin
    lc := c;
    read(c);
    if (c in ['a'..'z']) and (not b) then
      inc(ans);
    if (c in ['A'..'Z']) and (lc in (['A'..'Z'] + ['a'..'z'])) then
      inc(ans);
    if not (c in ['.','?','!',' ',#10,#13]) then
      b := true;
    if c in ['.','?','!'] then
      b := false;
  end;
  write(ans);
end.

My program (with error, I know where it is, but I will not write about it):
import sys
text = sys.stdin.readlines()
text = ''.join(text)
for symbol in ',;:-\n':
    text = text.replace(symbol, ' ')
text = text.replace('!', '.').replace('?', '.')
import re
text = ' '.join(text.split())
text = text.replace('. ', '.')
text = '.'.join(text.split('.'))
text = text.replace(' .', '.')
count = 0
for sentence in text.split('.'):
    if sentence != '':
        if sentence[0].islower():
            count += 1
        for word in sentence.split():
            for letter in word[1:]:
                if letter.isupper():
                    count += 1
print(count)

Edited by author 06.07.2016 19:17

What is in test 2 ??????????????????
YOUR TEST CASES ARE WROUNG

MY PROGRAMM IS CORRECT !!

my code:

#include <iostream>
#include <string>

using namespace std;

int main(int argc, char *argv[])
{
    string sent;
    char c = 0;
    size_t count = 0;
    while (cin.get(c))
    {
        sent.push_back(c);
        if (c == '.' || c == '?' || c == '!')
        {
            size_t i = 0;
            while (i < sent.size() && !isalpha(sent[i]))
            {
                i++;
            }

            if (i < sent.size() && islower(sent[i]))
                count++;

            string word = "";
            for (size_t i = 0; i < sent.size() + 1; i++)
            {
                if (i < sent.size() && (isalpha(sent[i])))
                {
                    word += sent[i];
                }
                else
                {
                    for (size_t j = 1; j < word.size(); j++)
                    {
                        if (isupper(word[j]) && isalpha(word[j]))
                            count++;
                    }
                    word = "";
                }
            }
            sent.clear();
            //cout << count << endl;
        }
    }
    cout << count;
    return 0;
}


Edited by author 12.06.2015 20:13

Edited by author 12.06.2015 20:13

for WA5, try this test

hEllo wOrld!!! w

The correct answer is 4

it maybe happen the end of file not end by : '!' || '?' || '.', like "this sentensec has no mistake"

this sentences ,really has no mistake
sorry, for my bad english :D

Edited by author 08.10.2010 16:59

Edited by author 08.10.2010 16:59

A
a
ans = 0
---------------------
A
A
ans = 0
---------------------
aB
ans = 2
---------------------
asasa.!sds
sdsdsd!!!..::dsd
ans = 3
---------------------
-a.
ans = 1
--------------------
090aA is a number.
ans = 2
--------------------
this sentence have one mistake
ans = 1
--------------------
Hello! 238 my Friend
ans = 1
--------------------
Asf,.,a
ans = 1
--------------------

New tests have been added to this problem. Solutions have been rejudged. 564 authors have lost AC.

Please, give me a test 2

#include<iostream>
#include<fstream>
#include<stdlib.h>
#include<stdio.h>
using namespace std;
int main()
{
   #ifndef ONLINE_JUDGE
   freopen("input.txt","rt",stdin);
   freopen("output.txt","wt",stdout);
   #endif
   char a[10005]={'\0'};
   int i=0,n=0,g=0,n1,n2;
   bool f=true,ff=false;
   char ab[100]={'\0'};
   int tt=scanf("%s",a);
   while(tt>0)
   {
              strcat(a,ab);
              strcat(a," ");
              tt=scanf("%s",ab);
   }
   n=strlen(a)-1;
   for(i=0;i<n;i++)
   {
        if (32<=int(a[i])&&int(a[i])<=64||91<=int(a[i])&&int(a[i])<=96||123<=int(a[i])&&int(a[i])<=255)
        if (a[i]!='.'&&a[i]!='!'&&a[i]!='?') {continue;}
{continue;}
         if (a[i]=='.'||a[i]=='?'||a[i]=='!') {f=true; continue;}
         if (f&&'a'<=a[i]&&a[i]<='z') {g++; } f=false;

   }
   int k=0; n2=0;
   for(i=0;i<=n;i++)
   {
[i]=='.'||a[i]=='!'||a[i]=='?'||a[i]=='%')
      if (32<=int(a[i])&&int(a[i])<=64||91<=int(a[i])&&int(a[i])<=96||123<=int(a[i])&&int(a[i])<=255)
      {
        n1=n2; n2=i;
        for(int j=n1+1+k; j<n2; j++) if ('A'<=a[j]&&a[j]<='Z') g++;
        k=1;
      }
   }
   cout<<g<<endl;
   return 0;
}

What it is WA #2;
please, give me any test

Hi,

When you read the input, don't just concatenate all into one string. For example:-

If the input is

asasa.!sds
sdsdsd!!!..::dsd

Then, you should have a final string which is like this:-

asasa.!sds sdsdsd!!!..::dsd

and not like this

asasa.!sdssdsdsd!!!..::dsd (this is wrong and will screw up)

There should be a space between the two lines which you are reading and concatenating !

Try test
"this sentence have one mistake"
Answer is 1