//

// Created by zhangrongxiang on 2017/10/21 20:37

// File main

//

#include <iostream>

#include <cstring>

using namespace std;

int main() {

char ch[] = {'h', 'e', 'l', 'l', 'o', '\0'};

char ch2[15];

cout << ch << endl;

cout << sizeof(ch) << endl;

cout << "strlen(ch) : " << strlen(ch) << endl;

strcpy(ch2,ch);

cout << ch2 << endl;

strcat(ch2,ch);

cout << ch2 << endl;

cout << "------------------------------------------------" << endl;

string str = "hello world";

cout << str << endl;

cout << str.size() << endl;

cout << str.compare(str) << endl;

cout << str.compare("H") << endl;

cout << str + str << endl;

cout << str.append(" world ") << endl;

}