#include #include using namespace std;class String {private:public:int size; // the actual size of the string (number of characters)char* str;String() { str = nullptr; size = 0; }String(const char* mystr); //create a String object and copy the null-terminated string mystr to str.int length(); // returns the size of the stringint find(String findstr); // return the index of findstr in str; return -1 ifnot found.indexString substr(int index, int size); // returns a String object with startingindex and size-size.void clear();// delete the array of chars and reset the size;void insert(const char newstr, int index); // inserts the null-terminatednewStr into str starting at index.void insert(String S, int index); // inserts 5.str into str starting at index,and adjust the size.void input (istream& is); // reads a string from a keyboard (Assume the strignsize is less than or equal to 80)void output (ostream& os); // prints the string str;};int main() {UAE0String s1;s1.input (cin); //Feed "Today is a great day";s1.output (cout); cout <<String s2("Welcome to UAE");s2.output (cout); cout << endl;String us2.substr(3, 20);u.output (cout); cout << endl;cout << "substring length=<< u.length() << endl;s2.substr(s2.find("UAE"), 3).output (cout); cout << endl;s1.clear();cout << s1.length() << endl;<

class String ( private: int size; // the actual size of the string (number of characters) char* str; public: String() { str nullptr; size = 0; } String(const char mystr); //create a String object and copy the null- terminated string mystr to str.

class String ( private: int size; // the actual size of the string (number of characters) char* str; public: String() { str nullptr; size = 0; } String(const char mystr); //create a String object and copy the null- terminated string mystr to str.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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