C++ Introduction to Programming.[college intro] It is a fundamental project and

Question

C++ Introduction to Programming.[college intro]

It is a fundamental project and simple.

ELIZA is a "virtual therapist"; you type things to it and it asks you questions. Here's a sample transcript (from the web based ELIZA linked on the project page): ELIZA: Please tell me what's been bothering you. YOU: My family doesn't understand me ELIZA: Your family ? YOU: They think I'm a horse. ELIZA: Do you know anyone else who is a horse ? YOU: I know lots of horses, I have no problem with horses. But I'm not a horse. ELIZA: Do you say you know lots of horses for some special reason? YOU: I'm just saying, I'm not anti-horse. ELIZA: Is it because you are just saying that you came to me ? YOU: No, I came because of my family. ELIZA: Why not ? As you can see, ELIZA is not particularly intelligent; it basically works by pattern matching. It looks for certain keywords and symbols in the text the user enters, and then responds based on those. For example, if I enter YOU: My father hates me ELIZA: What else makes you think of your father? it responds to the keyword "father". However, if I enter YOU: My dog hates me. ELIZA: You say your dog hates you? it doesn't recognize what I said, so it just does a simple replacement, repeating what I said as a question, while changing "my"' to "your" and "me" to "you". The core of ELIZA is Scanning the users input for keywords. (The original ELIZA would "rank" keywords so that a more-important keyword would be preferred to a less-important one, but you don't need to worry about that.) Replying, optionally transforming the user's input in some way. Which reply or transformation is used depends on the keyword: each keyword has its own reply or transformation that will be used. Although you could implement this using a big if-else chain to check for keywords and generate replies, you should think about ways to encode keywords and replies in data. For example, you might have a vector of keywords that are recognized, and then a parallel vector of replies. Search through the keyword vector for the first keyword found in the users input, and then get the corresponding reply. A more advanced usage might be to store in the reply vector, instead of just a literal string, a pattern, where parts of it could be replaced by parts of the user's input. (But start with something simple, and then work from there.) A good place to start for this project would be to write a function which reads a line and then splits it up into words, storing them in a vector. That will make it easier to look for keywords. You might also consider converting the input to lowercase, so you don't have to worry about uppercase letters.

Explanation / Answer

This question doesn't ask to code whole Eliza but to just read a line and break it into array of keywords in lowercase . Thats what this code will do:

#include<iostream>
#include<vector>
#include<sstream>

using namespace std;
void split(string str, vector<string> &keys){
   //spliting string by space
  
   stringstream ss;
ss.str(str);
string item;//temporary storage
while (getline(ss, item, ' ')) {
  
       for(int i=0;i<item.size();i++)
   {//checking for upper case
       if(item[i] <= 'Z' && item[i] >= 'A'){
           item[i] += 32;
           }
       }
      
       //pushing to keyword vector
       keys.push_back(item);
}
  
}

int main(){
   vector<string> keywords;
   string str;
  
   //scaning line from console
   getline(cin, str);  
  
   split(str, keywords);
      
   cout<<"Keywords: ";
for(int i=0;i<keywords.size();i++)
   cout<<keywords[i]<<endl;

return 0;
}

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