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Call a function: Difference between revisions
→{{header|C}}: Added possible named argument implementation
(Add Elixir) |
(→{{header|C}}: Added possible named argument implementation) |
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Line 356:
h(1, 2, 3, 4, "abcd", (void*)0);
/* named arguments:
*/
struct v_args {
int arg1;
int arg2;
char _sentinel;
};
void _v(struct v_args args)
{
printf("%d, %d\n", args.arg1, args.arg2);
}
#define v(...) _v((struct v_args){__VA_ARGS__})
v(.arg2 = 5, .arg1 = 17); // prints "17,5"
/* NOTE the above implementation gives us optional typesafe optional arguments as well (unspecified arguments are initialized to zero)*/
v(.arg2=1); // prints "0,1"
v(); // prints "0,0"
/* as a first-class object (i.e. function pointer) */
Line 372 ⟶ 389:
/* Scalar values are passed by value by default. However, arrays are passed by reference. */
/* Pointers *sort of* work like references, though. */</lang>
=={{header|C Sharp}}==
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