k_and_r.cpp

开放源码的编译器open watcom 1.6.0版的源代码

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// Why K&R style function declarations cannot be supported in C++
typedef int INT;
typedef double DOUBLE;

// function 'f1' with unnamed arguments
void f1( INT, DOUBLE )
{
}

// typedef-names can be used as arguments names
#if 0
// function 'f2' with named K&R style arguments (Zortech rejects this)
int f2( INT, DOUBLE )
int INT;
int DOUBLE;
{
    return INT + DOUBLE;
}
#else
int f2( int INT, int DOUBLE )
{
    return INT + DOUBLE;
}
#endif

// declaration of variable 'f3' initialized to 'a' (Zortech rejects this)
int a;
int f3( a );

// declaration of variable 'f3' initialized to comma-expression " a, f3 "
int f4( a, f3 );                        // (Zortech rejects this)