Nested struct variable initialization

Question

How can I initialize this nested struct in C? ``` typedef struct _s0 { int size; double * elems; }StructInner ; typedef struct _s1 { StructInner a, b, c, d, e; long f; char[16] s; }StructOuter; StructOuter myvar = {/* what ? */ }; ```

Accepted Answer

To initialize everything to 0 (of the right kind)

```
StructOuter myvar = {0};
```

To initialize the members to a specific value

```
StructOuter myvar = {{0, NULL}, {0, NULL}, {0, NULL},
                     {0, NULL}, {0, NULL}, 42.0, "foo"};
/* that's {a, b, c, d, e, f, s} */
/* where each of a, b, c, d, e is {size, elems} */
```

Edit

If you have a C99 compiler, you can also use "designated initializers", as in:

```
StructOuter myvar = {.c = {1000, NULL}, .f = 42.0, .s = "foo"};
/* c, f, and s initialized to specific values */
/* a, b, d, and e will be initialized to 0 (of the right kind) */
```

Nested struct variable initialization

Solution

Problem

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