Create a function check(s) that determines if its argument is a string in the format [i], where i is a non-negative integer. For example, the string "[34]" is valid. Spaces are allowed before the first bracket, after the second bracket, and to the left and right of the integer, so that the string " [     34       ] " is also valid. The argument is a C++ string. The function returns true or false. Use string streams.

Can you help me with a C++ program: To the class Song you created previously (included below)add functions that perform conversions between songs and strings. Moreprecisely, create a function to_string(s) that takes a song as argumentand returns a string that contains three lines with the song data. For example, the 2019 song September Blues by Quantic should convert to thefollowing string:September Blues\nQuantic\n2019\nAnd create a function to_Song(s) that takes a string as argument andreturns a Song object. The string argument is assumed to contain threelines with valid song data, as shown above.Use string streams #include <iostream>#include <string>using namespace std;class Song {private:  string Title;  string Artist;  int Year;public:  Song() : Title("invalid"), Artist("invalid"), Year(-1) {}  Song(const string &Title) : Title(Title), Artist("unknown"), Year(-1) {}  Song(const string &Title, const string &Artist, int Year)      : Title(Title),…

Write a function named “isComment” thatwill read in a string from the user (a sequence of characters). It will return true if the string starts with “//” and false otherwise. Please note the comment can start with 0 or more blanks before “//”.  In C++ please.

C++