A program memory variable is declared using the __pmem qualifier. Here are some examples:
typedef struct // simple structure declaration
{
int i;
char *p;
long l;
} test;
__pmem int ip1 = 5; // initialized int in program memory
__pmem int ip2; // uninitialized int in program memory
int *__pmem ppx1; // pointer in program memory to int in data memory
__pmem int * __pmem ppp1; // pointer in program memory to int in program memory
__pmem int parr[ 100 ]; // array in program memory
__pmem test sp; // structure in program memory
__pmem int aap[ 2 ][ 2 ]; // two dimensional array in program memory
__pmem int *pxp1; // pointer in data memory to int in program memory