plateau P1 = {.cases = {{V,V,V,V,V,V,V,V},
{V,V,V,V,V,V,V,V},
{V,V,V,V,V,V,V,V},
{V,V,V,B,N,V,V,V},
{V,V,V,N,B,V,V,V},
{V,V,V,V,V,V,V,V},
{V,V,V,V,V,V,V,V},
{V,V,V,V,V,V,V,V}}};
ou
plateau P1;
P1 = (plateau){.cases = {{V,V,V,V,V,V,V,V},
{V,V,V,V,V,V,V,V},
{V,V,V,V,V,V,V,V},
{V,V,V,B,N,V,V,V},
{V,V,V,N,B,V,V,V},
{V,V,V,V,V,V,V,V},
{V,V,V,V,V,V,V,V},
{V,V,V,V,V,V,V,V}}};
http://gcc.gnu.org/onlinedocs/gcc-4.8.2/gcc/Compound-Literals.html