# mco_dict_field_init_data
RT

> Return a pointer to the field’s default data value.

### Prototype

        MCO_RET mco_dict_field_init_data(	/*IN*/ mco_metadict_header_t * metadict,
                            /*IN*/ unsigned short dict_no,
                            /*IN*/ unsigned short struct_no,
                            /*IN*/ unsigned short field_no,
                            /*OUT*/ mco_uda_value_t * buf );

### Arguments

metadict | The address of an initialized mco_metadict_header_t structure
dict_no | The number of the dictionary (must be between 0 and `mco_metadict_count().` - 1)
struct_no | The structure/class index (must be between 0 and `mco_dict_struct_count()` - 1)
field_no | The field number (must be between 0 and `struct_info.field_count` - 1)
buf | The address of a `mco_uda_value_t` variable to receive the field default data value

### Description

> This function returns a pointer to the field’s default data value by `field_no`.

### Return Codes

MCO_S_OK | The field default data value was successfully returned.
MCO_E_UDA_DICT_NOTFOUND | The dictionary is not registered.
MCO_E_UDA_STRUCT_NOTFOUND | Invalid `struct_no`.
MCO_E_UDA_FIELD_NOTFOUND | Invalid `field_no`.

### Example

        Application snippet:

        const char * dbname = "SimpleDb";

        int main(int argc, char* argv[])
        {
            MCO_RET rc;
            unsigned int dict_no = 0;
            unsigned int count;
            mco_metadict_header_t *header;
            const char * name = "MyClass";
            mco_dict_struct_info_t struct_info;
            mco_uda_value_t value;

            ...

            header = (mco_metadict_header_t *) malloc(size);
            mco_metadict_init(header, size); /* initialize the metadict */
            ...
            rc = mco_dict_struct_name(header, dict_no, name, &struct_info);
            for (i = 0; i < struct_info.field_count; ++i)
            {
                /* get field default value */
                value.type = MCO_DD_UINT4;
                rc = mco_dict_field_init_data(header, dict_no, struct_info.struct_no, i, &value);

                printf("Field %d : Default value %d\n", i, value.v.u4);
            }
            ...
        }

### Files

Header file:
mcouda.h
Source file:
mcouda.c
Library:
libmcouda.a