Error assigining a structure array containing another structure array

Question

This is my code:

struct first
{
    char x;
    int y;
};
first a[3]={{'a',1},{'c',2},{'b',3}};
struct second
{
    first b[2]; 
    int z;
};
second c={{a[0],a[1]},12};

Basically, when I'm assigning the second structure, the first element is supposed to be an array of the first structure type. So I am trying to put two elements a[0] and a[1] in it. But it shows the error:

ERROR CYAPA.CPP 12: Cannot convert 'first' to 'char'

ERROR CYAPA.CPP 12: Cannot convert 'first' to 'int'

What am I doing wrong? I am using Turbo c++ as it is what is allowed by our curriculum in India.

On gcc 4.8, the code compiled (I puh both initializations inside main()). — Erik Alapää
– Erik Alapää, Commented May 13, 2016 at 11:24
Thanks for the input. I ultimately ended up creating an 'id' for each element of the first structure, and just use an integer in the second structure to access a particular index of a[]. — poiasd
– poiasd, Commented May 13, 2016 at 11:46

M.M · Accepted Answer · 2016-05-13 11:24:50Z

1

This sort of initialization is not allowed in C, but it was allowed in C++98 .

Your compiler predates 1998 by several years so it is not surprising that it does not allow some things that did become part of the C++ Standard.

You'll have to write {'a', 1} instead of a[0] etc. , or use a macro. The macro solution might look like:

#define A0 {'a', 1}
#define A1 {'c', 2}
#define A2 {'b', 3}

first a[3]={A0, A1, A2};
second c={{A0, A1}, 12 };

Alternatively you could initialize a and then set up c at runtime.

answered May 13, 2016 at 11:24

M.M

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1 Comment

poiasd Over a year ago

Sad that my school uses such ancient standards... I'll definitely ask our Teacher to upgrade!

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