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Need help writing the functions with TO BE WRITTEN above them in the .h for the .cpp file

.h 

#ifndef GITINT_H #define GITINT_H #include diffs_; CommitIdx parent_; /** * Completed constructor * * @param[in] msg * Log message for this commit. * @param[in] diffs * Map containing the filename (key) and integer *difference* * of the file from the parent commit. * @param[in] parent * Index of the parent commit. */ CommitObj( const std::string& msg, std::map diffs, CommitIdx parent) : msg_(msg), diffs_(diffs), parent_(parent) {} }; /** * @brief Class to model 'git' for files containing integers */ class GitInt { public: /** * Default constructor * [TO BE WRITTEN] */ GitInt(); /** * Prints the menu of command options. * [COMPLETED] */ void print_menu() const; /** * Processes/executes a line of input (i.e. one command with its options) * [TO BE WRITTEN] * * @param[in] cmd_line * String containing the entire command line to be processed * @returns 'true' if the "quit" command was entered, 'false' otherwise * @throws std::invalid_argument or std::runtime_error */ bool process_command(std::string cmd_line); /** * Creates a new file with the given value * [TO BE WRITTEN] * * @param[in] filename * Name of the file to be created * @param[in] value * Integer content of the file * @throws std::invalid_argument or std::runtime_error - * See homework writeup for details on error cases */ void create(const std::string& filename, int value); /** * Modifies the given file to a new value * [TO BE WRITTEN] * * @param[in] filename * Name of the file to be edited * @param[in] value * New integer content of the file * @throws std::invalid_argument or std::runtime_error - * See homework writeup for details on error cases */ void edit(const std::string& filename, int value); /** * Displays the current contents of the given file * [TO BE WRITTEN] * * @param[in] filename * Name of the file to be edited * @throws std::invalid_argument - * See homework writeup for details on error cases */ void display(const std::string& filename) const; /** * Displays the current content of all files * [TO BE WRITTEN] * */ void display_all() const; /** * Displays the contents of the given commit's diff map * [COMPLETED] * * @param[in] commit * Index of the commit to display * @throws std::invalid_argument - * See homework writeup for details on error cases */ void display_commit(CommitIdx commit) const; /** * Stages the given file for commit * [TO BE WRITTEN] * * @param[in] filename * File to be staged and committed on the next commit command * @throws std::invalid_argument or std::runtime_error - * See homework writeup for details on error cases */ void add(std::string filename); /** * Commits all files staged since the last commit * [TO BE WRITTEN] * * @param[in] message * Log message for this commit * @throws std::runtime_error - * See homework writeup for details on error cases */ void commit(std::string message); /** * Associates a new tag name to the currently checked-out commit * [TO BE WRITTEN] * * @param[in] tagname * Name for this tag * @param[in] commit * Commit number/index to associate with the given tagname * @throws std::invalid_argument or std::runtime_error - * See homework writeup for details on error cases */ void create_tag(const std::string& tagname, CommitIdx commit); /** * Displays all tag names in the order they were created from most * to least recent. * [TO BE WRITTEN] * */ void tags() const; /** * Updates the files and content to match the state of the given commit * [TO BE WRITTEN] * * @param[in] commit * Index of the commit to checkout * @throws std::invalid_argument or std::runtime_error - * See homework writeup for details on error cases */ bool checkout(CommitIdx commitIndex); /** * Updates the files and content to match the state of the given commit * [TO BE WRITTEN] * * @param[in] tag * Tag name associated with the commit to checkout * @throws std::invalid_argument or std::runtime_error - * See homework writeup for details on error cases */ bool checkout(std::string tag); /** * Displays the commit numbers and log message in order from the current * checked-out commit back through all parent/ancestor commits. * [TO BE WRITTEN] * */ void log() const; /** * Display the file content differences between the current state back * through all parent/ancestor commits until the `to` commit * [TO BE WRITTEN] * * @param[in] to * Index of the commit to end the diff process * @throws std::invalid_argument - * See homework writeup for details on error cases */ void diff(CommitIdx to) const; /** * Display the file content differences between commit `from` back * through all parent/ancestor commits until the `to` commit * [TO BE WRITTEN] * * @param[in] from * Index of the commit to start the diff process * @param[in] to * Index of the commit to end the diff process * @throws std::invalid_argument - * See homework writeup for details on error cases */ void diff(CommitIdx from, CommitIdx to) const; /** * Returns true if the given input is a valid commit number * [TO BE WRITTEN] * @param[in] commit */ bool valid_commit(CommitIdx commit) const; private: /** * Builds the file state between commit 'from' until 'to' (exclusive) * [OPTIONAL - TO BE WRITTEN] * * @param[in] from * Index of the commit to start the accrual of diffs * @param[in] to * Index of the commit to end the accrual of diffs * @throws may vary depending on implementation */ std::map buildState(CommitIdx from, CommitIdx to = 0) const; /** * Displays a map containing filenames and contents in the desired format * [COMPLETED] * * @param[in] dat * Filename and values map to print */ void display_helper(const std::map& dat) const; /** * Displays a single commit in the desired log format * [COMPLETED] * * @param[in] commit_num * Index of the commit to be printed * @param[in] msg * Log message of the commit to be printed */ void log_helper(CommitIdx commit_num, const std::string& log_message) const; // Add data members here }; #endif .cpp 

#include > cmd; if (ss.fail()) throw std::runtime_error(INVALID_COMMAND); if (cmd == "quit") { quit = true; } // Continue checking/processing commands return quit; } void GitInt::display_commit(CommitIdx commit) const { if ( false == valid_commit(commit) ) { throw std::invalid_argument(INVALID_COMMIT_NUMBER); } display_helper(commits_[commit].diffs_); } void GitInt::display_helper(const std::map& dat) const { for (std::map::const_iterator cit = dat.begin(); cit != dat.end(); ++cit) { std::cout << cit->first << " : " << cit->second << std::endl; } } void GitInt::log_helper(CommitIdx commit_num, const std::string& log_message) const { std::cout << LOG_COMMIT_STARTER << commit_num << std::endl; std::cout << log_message << std::endl << std::endl; }