How Not to Program in C++

116 Chapter 6

Program 77: No Value

The following program fails to compile because the

value

is undefined. We

never use the variable

value

, so what’s the problem?

1 /************************************************

2 * double -- Print a double table for the *

3 * numbers 1 through 10. *

4 ************************************************/

5 #include <iostream>

6

7 /************************************************

8 * DOUBLE -- Macro to double the value of a *

9 * number. *

10 ************************************************/

11 #define DOUBLE (value) ((value) + (value))

12

13 int main()

14 {

15 // Counter for the double list

16 int counter;

17

18 for (counter = ...