Generate c++ code of a compiler's scanner for a language that has only 2 words: "tm" and "tmm"
user
here is a simple c++ code for a scanner that recognizes the words "tm" and "tmm" in a given input string. the code uses a basic state machine concept to parse the input and detect the two words.

```cpp
#include <iostream>
#include <string>

enum class state {
    start,
    found_t,
    found_tm,
    error
};

bool is_valid_word(const std::string& word) {
    state state = state::start;
    int index = 0;
    for (char c : word) {
        switch (state) {
            case state::start:
                if (c == 't') {
                    state = state::found_t;
                } else {
                    state = state::error;
                }
                break;
            case state::found_t:
                if (c == 'm') {
                    state = state::found_tm;
                } else {
                    state = state::error;
                }
                break;
            case state::found_tm:
                if (c == 'm' && index == (word.length() - 1)) {
                    return true;
                } else {
                    state = state::error;
                }
                break;
            case state::error:
                return false;
        }
        index++;
    }
    return state == state::found_tm;
}

int main() {
    std::string input;
    std::cout << "enter a string to check if it's a valid word: ";
    std::cin >> input;

    if (is_valid_word(input)) {
        std::cout << "the word '" << input << "' is valid in the given language.\n";
    } else {
        std::cout << "the word '" << input << "' is not valid in the given language.\n";
    }

    return 0;
}
```

this code creates a simple state machine with four states: start, found_t, found_tm, and error. the state machine transitions between these states based on the characters in the input word.

when you run the program, it will prompt you to enter a string. it will then check if the string is a valid word (either "tm" or "tmm") in the language, and output a message accordingly.
assistant
Here is a simple C++ code for a scanner that recognizes the words "tm" and "tmm" in a given input string. The code uses a basic state machine concept to parse the input and detect the two words.

```cpp
#include <iostream>
#include <string>

enum class State {
    START,
    FOUND_T,
    FOUND_TM,
    ERROR
};

bool is_valid_word(const std::string& word) {
    State state = State::START;
    int index = 0;
    for (char c : word) {
        switch (state) {
            case State::START:
                if (c == 't') {
                    state = State::FOUND_T;
                } else {
                    state = State::ERROR;
                }
                break;
            case State::FOUND_T:
                if (c == 'm') {
                    state = State::FOUND_TM;
                } else {
                    state = State::ERROR;
                }
                break;
            case State::FOUND_TM:
                if (c == 'm' && index == (word.length() - 1)) {
                    return true;
                } else {
                    state = State::ERROR;
                }
                break;
            case State::ERROR:
                return false;
        }
        index++;
    }
    return state == State::FOUND_TM;
}

int main() {
    std::string input;
    std::cout << "Enter a string to check if it's a valid word: ";
    std::cin >> input;

    if (is_valid_word(input)) {
        std::cout << "The word '" << input << "' is valid in the given language.\n";
    } else {
        std::cout << "The word '" << input << "' is NOT valid in the given language.\n";
    }

    return 0;
}
```

This code creates a simple state machine with four states: START, FOUND_T, FOUND_TM, and ERROR. The state machine transitions between these states based on the characters in the input word.

When you run the program, it will prompt you to enter a string. It will then check if the string is a valid word (either "tm" or "tmm") in the language, and output a message accordingly.
assistant