string.compare for c++

I am asking user to input a word then have my program compare it with an input .txt file but even tho I type in exactly a word in data.txt it still executes false.

//------------in my data.txt---------
// Banana Bed Today
// Apples Chair Window
// Corn Tomorrow Hive

string testData;
  cout<<"enter Data: ";
  cin>>testData;
  for(i=0; i<s.size()-1; i++){
    if (t开发者_运维问答estData.compare(s[i]->name) == 0)
      cout<<"Right\n";
    if (youkno.compare(s[i]->name) != 0)
        cout<<"Wrong\n";
  }

if i prompt Banana then output excuted wrong

If you replace:

for(i=0; i<s.size()-1; i++){

with:

for(i=0; i<s.size(); i++){  // Adjusting to check last entry as well.
    cout << "[" << s[i]->name << "][" << testData << "]" << endl;

you may find it becomes blindingly obvious. There's a good chance that one of your strings is not quite what you expect.

What is in s[i]->name? If you read that data from a file, you may have included the line endings in the name variable.

Also, why not use operator== ?

EDIT: just noticed you have an off by one error. your for loop should be

for(i=0; i<s.size(); i++)

Otherwise you don't compare the last value item in s