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I cannot see why I am getting WA. Language is c++


#include <iostream>
#include<string>
#include <vector>
using namespace std;

void main(void)

{
char ch;
vector<string> sent;
for(cin.get(ch);cin;cin.get(ch))
{
string word;
word+=ch;
for(cin.get(ch);ch!='\n';cin.get(ch))
word+=ch;
sent ...