从0学习C++ (四) cin读取一行输入

#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;}