string_tester.cpp

来自「the source of dev_c++ most of them for 」· C++ 代码 · 共 46 行

// String Tester
// Demonstrates string objects

#include <iostream>
#include <string>

using namespace std;

int main()
{
    string word1 = "Game";
    string word2("Over");
    string word3(3, '!');

    string phrase = word1 + " " + word2 + word3;
    cout << "The phrase is: " << phrase << "\n\n";

    cout << "The phrase has " << phrase.size() << " characters in it.\n\n";

    cout << "The character at position 0 is: " << phrase[0] << "\n\n";

    cout << "Changing the character at position 0.\n";
    phrase[0] = 'L';
    cout << "The phrase is now: " << phrase << "\n\n";

    for (int i = 0; i < phrase.size(); ++i)
        cout << "Character at position " << i << " is: " << phrase[i] << endl;

    cout << "\nThe sequence 'Over' begins at location " << phrase.find("Over") << endl;

    if (phrase.find("eggplant") == string::npos)
        cout << "'eggplant' is not in the phrase.\n\n";

    phrase.erase(4, 5);
    cout << "The phrase is now: " << phrase << endl;
    phrase.erase(4);
    cout << "The phrase is now: " << phrase << endl;
    phrase.erase();
    cout << "The phrase is now: " << phrase << endl;

    if (phrase.empty())
        cout << "\nThe phrase is no more.\n";

 return 0;
}