please show work in c++

// Implement the goToPage method, which will take in a url II and update the current page If It should also push the previous page to the history Il returns nothing void goToPage(string inurl\} \{\} If Implement goback method to go to the previous page in history I/ If there is no previous page to move to, Il print a message and do nothing void goBack( }{} If Implement method canGoBack, If which deteraines whether there is a previous url in the history If Hint: your Stack class has a useful method for this! bool canGoBack ( ) \{ return false; // fix thisi 3 I/ Inplement the historylength method, which If returns how many urls are in the history, If not ineluding the current page. If hint: Your stack has a useful method for this! int historylength( \{ return history-size (; // fix this