vegnews.cpp

来自「一本很好的C++学习的丛书！初学者必看的」· C++ 代码 · 共 47 行

// vegnews.cpp -- using new and delete with classes
// compile with strngbad.cpp
#include <iostream>
using std::cout;

#include "strngbad.h"

void callme1(StringBad &);  // pass by reference
void callme2(StringBad);    // pass by value

int main()
{
    using std::endl;
    StringBad headline1("Celery Stalks at Midnight");
    StringBad headline2("Lettuce Prey");
    StringBad sports("Spinach Leaves Bowl for Dollars");
    cout << "headline1: " << headline1 << endl;
    cout << "headline2: " << headline2 << endl;
    cout << "sports: " << sports << endl;
    callme1(headline1);
    cout << "headline1: " << headline1 << endl;
    callme2(headline2);
    cout << "headline2: " << headline2 << endl;
    cout << "Initialize one object to another:\n";
    StringBad sailor = sports;
    cout << "sailor: " << sailor << endl;
    cout << "Assign one object to another:\n";
    StringBad knot;
    knot = headline1;
    cout << "knot: " << knot << endl;  
    cout << "End of main()\n";
    
    return 0;
}

void callme1(StringBad & rsb)
{
    cout << "String passed by reference:\n";
    cout << "    \"" << rsb << "\"\n";
}

void callme2(StringBad sb)
{
    cout << "String passed by value:\n";
    cout << "    \"" << sb << "\"\n";
}