程序清單5.1 forloop.cpp

// forloop.cpp -- introducing the for loop
#include <iostream>
int main()
{
    using namespace std;

    int i;

    for (i = 0; i < 5; i++)
        cout << "C++ knows loops.\n";
    cout << "C++ knows when to stop.\n";

    return 0;
}

輸出：

C++ knows loops.
C++ knows loops.
C++ knows loops.
C++ knows loops.
C++ knows loops.
C++ knows when to stop.