C++ Primer Plus, Fourth Edition

More C++ Statements

Look at a couple more examples of statements. The program in Listing 2.3 expands on the preceding example by allowing you to enter a value while the program is running. To do so, it uses cin (pronounced cee-in), the input counterpart to cout. Also, the program shows yet another way to use that master of versatility, the cout object.

Listing 2.3. yourcat.cpp

// yourcat.cpp -- input and output #include <iostream> using namespace std; int main() { int fleas; cout << "How many fleas does your cat have?\n"; cin >> fleas; // C++ input // next line concatenates output cout << "Well, that's " << fleas << " fleas too many!\n"; return 0; }

Here is a sample output:

How many fleas does your cat have?
112 Well, that's 112 fleas too ...