string类

#include<iostream>
#include<string>
using namespace std;
int main()
{
    using namespace std;
    string one("My name is String!");//初始化，C-风格
    cout << one << endl;//使用重载<<运算符显示
    string two(20, ‘$‘);//初始化为由20个字符组成的字符串
    cout << two << endl;
    string three(one);//复制构造函数将string对象three初始化为one
    cout << three << endl;
    one += "I love wly.";//附加字符串
    cout << one << endl;
    two = "Sorry!"; 
    three[0] = ‘p‘;//使用数组表示法访问
    string four;
    four = two + three;
    cout << four << endl;
    char alls[] = "All‘s well that ends well.";
    string five(alls, 20);//只使用前20个字符
    cout << five << "!\n";
    string six(alls + 6, alls + 10);
    cout << six << endl;
    string seven(&five[6], &five[10]);
    cout << seven << endl;
    string eight(four, 7, 16);
    cout << eight << endl;
    return 0;
}

#include<iostream>
#include<string>
using namespace std;
void Print(char s[])
{
    int i;
    for (i = 0; s[i] != ‘\0‘; i++)
        cout << s[i];
    cout << endl;
    cout << "字符串长: " << i << endl;
}
int main()
{
    char info[100];
    cin >> info;
    Print(info);
    cin.get();
    cin.getline(info, 100);
    Print(info);
    cin.get(info, 100);
    Print(info);
    return 0;
}