strdemo.cpp

来自「C++&datastructure书籍源码,以前外教提供现在与大家共享」· C++ 代码 · 共 19 行

#include <iostream>
#include <string>
using namespace std;

// illustrates string member functions length() and substr()

int main()
{
    string s;
    cout << "enter string: ";
    cin >> s;
    int len = s.length();
    cout << s << " has " << len << " characters" << endl;
    cout << "first char is " << s.substr(0, 1)   << endl;
    cout << "last char is  " << s.substr(s.length()-1, 1) << endl;
    cout << endl << "all but first is " << s.substr(1,s.length()) << endl;
    return 0;
}