第十八章 4string 字符串的合并

#include <iostream>
#include <string>
using namespace std;
int main()
{
	//char字符数组的的合并
	char ch1[40] = "what's your name ";
	char ch2[] = "my name is jack";
	strcat(ch1,ch2);
	cout<<"ch1:"<<ch1<<endl;
	cout<<"ch2:"<<ch2<<endl<<endl<<endl;

	//string类字符串的合并
	string str1 = "what's your name ";
	string str2 = "my name is jack";
	str1= str1 + str2;
	cout<<"str1:"<<str1<<endl;
	cout<<"str2:"<<str2<<endl;

	cout<<strlen(str1.c_str())<<endl;
	//将一个string对像转换为char字符串数组

	cout<<"str1.size:"<<str1.size()<<endl;
	cout<<"str2.size:"<<str2.size()<<endl;



	cout<<"str1.strlen:"<<str1.length()<<endl;
	cout<<"str2.strlen:"<<str2.length()<<endl;


	string str3;
	cout<<"str3.size:"<<str3.size()<<endl;

	
	return 0;
}