C++ Primer笔记（一）：字符串、向量和数组

3.1 命名空间

3.2 类型string

getline(cin, str);
str.empty();
str.size();

for(auto c : str)
{}

for(auto &c : str)
{}

#include "stdafx.h"
#include <iostream>
#include <string>

using namespace std;

int _tmain(int argc, _TCHAR* argv[])
{
string str;

cout << "3.6" << endl;
str = "aruew32413aefjewoiroqw1231./awrfwer";
cout << str << endl;
for (auto &i : str)
{
i = 'X';
}
cout << str << endl;

cout << "3.7" << endl;
str = "aruew32413aefjewoiroqw1231./awrfwer";
cout << str << endl;
for (auto i : str)
{
i = 'X';
}
cout << str << endl;

cout << "3.10:Enter a string including punctuation." << endl;
getline(cin, str);
for (auto i : str)
if (!ispunct(i)) cout << i;
cout << endl;

cout << "3.11" << endl;
const string s = "hello";
for (auto &i : s)
{
cout << typeid(i).name() << endl;
break;
}

return 0;
}