字符串输入
#include<iostream>
using namespace std;
int main()
{
const int size = 12;
char name[size] ;
char addr[size] ;
cout<<"enter your name:\n";
cin>>name;
cout<<"enter your address:\n";
cin>>addr;
cout<<"my name is "<<name<<" live in "<<addr<<endl;
return 0;
}
enter your name:
hey lodon aaa
enter your address:
my name is hey live in lodon
可以看出 cin 只读取单词，遇到空白（空格、制表符、换行符）结束。
每次读取一行
getline()和get()都读取一行，直到遇到换行符。getline丢弃换行符，get将换行符留在序列中。
#include<iostream>
using namespace std;
int main()
{
const int size = 12;
char name[size] ;
char addr[size] ;
cout<<"enter your name:\n";
cin>>name;
cout<<"enter your address:\n";
cin.getline(addr, size);
cout<<"my name is "<<name<<" live in "<<addr<<endl;
return 0;
}```
>enter your name:
hello
enter your address:
my name is hello live in
因为cin>>name 吸收了一个换行符，getline 遇到这个换行符直接跳过了。要能正常执行只需要在cin>>name 后面添加一句 cin.get() 或者 改成（cin>>name).get()
### C++中的string 类
C++98标准通过添加string类扩展了C++库。可以用string类代替上面的字符数组来处理字符串。
