String Implement a custom type for representing strings in C++. Allow following operations as well as operators, considering dynamic memory allocation: Operations: • length: determine the length of...

Extracted text: String Implement a custom type for representing strings in C++. Allow following operations as well as operators, considering dynamic memory allocation: Operations: • length: determine the length of string upper: convert the string to upper case • lower: convert the string to lower case • at: return character at a given index • substring: extract a substring given start and end • index: find starting index of a substring • compare: compare two strings concat: concatenate/append the argument after current string. Cater cases for different data types such as String, C-string, char, int, float prepend: concatenate/append the argument before current string. Cater cases for different data types such as String, char, int, float Operators: + : for concatenation and prepend operations taking into account different data types and order of argumets = : for assignment • =, !=, < and=""> : for comparison operations ] : for access to character at a given index >> and < :="" for="" output="" and="" input="" a="">