How do I use the conditional operator?

Question

I\'ve always wondered how to write the \"A ? B : C\" syntax in a C++ compatible language.

I think it works something like: (Pseudo

Answer 1

No one seems to mention that a result of conditional operator expression can be an L-value in C++ (But not in C). The following code compiles in C++ and runs well:

    int a, b;
    bool cond;
    a=1; b=2; cond=true;
    (cond? a : b) = 3;
    cout << a << "," << b << endl;

The above program prints 3, 2

Yet if a and b are of different types, it won't work. The following code gives a compiler error:

    int a;
    double b;
    bool cond;
    a=1; b=2; cond=true;
    (cond? a : b) = 3;
    cout << a << "," << b << endl;