CODEWITHSUNDEEP
c++arrayspointersparameters
Aykut Kllic
Aykut Kllic

Reputation: 927

Passing a pointer array as a parameter in C++

I can't find the correct syntax for passing a pointer array of type float *[] as a parameter to a function.

real * pp[] = { _osc[0].get_samples_ptr(), _osc[1].get_samples_ptr() };
_mod.iterate_sample_loop( samples, p_syn_ctx, pp );

is ok, but

_mod.iterate_sample_loop( samples, p_syn_ctx, 
                          { _osc[0].get_samples_ptr(), 
                            _osc[1].get_samples_ptr() } );

where iterate_sample_loop is:

void mod::iterate_sample_loop( u32 samples, 
                               synth_context * p_syn_ctx, 
                               real * p_inputs[] ) ...

results "error: expected primary-expression before 'xxx' token".

Upvotes: 0

Views: 180

Answers (1)

R. Martinho Fernandes
R. Martinho Fernandes

Reputation: 234354

You can't create an array temporary with { _osc[0].get_samples_ptr(), _osc[1].get_samples_ptr() }. AFAIK the only way to create an array temporary is like this:

typedef int array_type[3];

void f(int the_array[]) {}

int main() {
    f(array_type{1,3,4});
}

This only works in C++11, though. I think it's not possible at all in C++03.

Upvotes: 3

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