#include <iostream>

#include <cstring> //C-Style Strings in C++

using namespace std;

int main(){

//char identifier[size] = "..."; //array of characters

char myString[10] = "Hello"; //[H][E][L][L][O][\0] ==> \0 is end of the strings

// 0 1 2 3 4 5

//char myString[] = {'H', 'E', 'L', 'L', 'O', '\0'};

cout << myString << endl;

cout << strlen(myString) << endl; //size of string

//Concatenating cstrings

char A[] = "Introduction";

char B[] = " to c++";

char C[] = " !";

strcat(A, B);

cout << A << endl;

char D[20];

strcpy(D, strcat(A, C)); //using output of one function as parameter of another function

//A + C and D = A are invalid

cout << D << endl;

strcat(D, " ****");

cout << D << endl;

char E[20];

strcpy(E, A);

/*some functions of cstrings

strcmp(string1,string2) => comparing two strings (S1=S2 => 0, S1>S2 => positive number, S1<S2 => negative number)

isdigit(char) => if number: 1, else 0

isalph(char) => if alphabet: 1, else: 0

strlwr(string) => lower case alphabet

strupr(string) => upper case alphabet

...

*/

//Example:

char mySTR[51];

//cin >> mySTR; //every character before space or tab

cin.get(mySTR, 50); //Space and tab can be used

strupr(mySTR);

cout << mySTR << endl;

}