#include <iostream>;
#include <cmath>;
#include <string>;
#include <cstring>;

/*
	cin读取一行数据,获取正行输入。
	char[]  与 string的区别。
*/




int main(){
	using namespace std;
	
	char mchar[20];
	string str;

	cout << "mchar strlen = " << strlen(mchar) << endl;
	cout << "str size = " << str.size() << endl;
	cout << "enter for  char" << endl;
	cin.getline(mchar,20);
	cout << "enter for str" << endl;
	getline(cin,str);

	cout << mchar << endl;
	cout << str << endl;

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


	
	


}