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Removed after accepted

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#include <iostream>
using namespace std;
int main(){   

   char str[2000];
   char k=1;     
   while(cin){
     cin.getline(str, 2000);       
      for(int i=0; str[i]!= '\0' ; i++){
              
         if(str[i]=='"'){         
            if(k%2==1) cout<<"``";
            else cout<<"''";         
            k++;         
         }
         else cout<<str[i];     
      }   
      cout<<endl;
   }    
   return 0;
}

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   char k=1; 

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   int k=1;

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``To be or not to be,'' quoth the Bard, ``that
is the question''.
The programming contestant replied: ``I must disagree.
To `C' or not to `C', that is The Question!''
--------> there is a blank line, please delete it !! 

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while(cin){ 
     cin.getline(str, 2000);        

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while(cin.getline(str, 2000))

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the code is removed after ac.

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"I am mr newton". "are you ish?
          n" nothing' to be worried" " ".

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``i am mr newton''. ``are you ish?
          n'' nothing' to be worried`` '' ``.

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#include <stdio.h> 
#include <string.h> 
int main() 
{ 
int i; 
int k; 
int count; 
char sl[2000]; 

while( gets(sl) != EOF ) 
{ 
k = strlen(sl); 
count = 0; 
for(i=0;i<k;i++) 
{ 

if((sl[i] == '"') && (count%2 == 0) ) 
{ 
printf("``"); 
count++; 
} 
else if((sl[i] == '"') && (count%2 != 0) ) 
{ 
printf("''"); 
count++; 
} 
else 
{ 
printf("%c",sl[i]); 

} 


} 
printf("\n"); 

} 

return 0; 

}

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#include <stdio.h>
#include <string.h>
int main()
{
    int i;
    int k;
    int count;
    char sl[2000];
    
    while( gets(sl) != NULL )
    {
         k = strlen(sl);
         count = 0;
         for(i=0;i<k;i++)
         {
           
            if((sl[i] == '"') && (count%2 == 0) )
            {
                  printf("``");
                  count++;
            }
            else if((sl[i] == '"') && (count%2 != 0) )
            {
                  printf("''");
                  count++;
            }
            else
            {
                printf("%c",sl[i]);
               
            }
                
             
         }
         printf("\n");
         
    }
    
    return 0;

}

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removed
}