int iArr[3] = {0x1234, 0x5678, 0x9abc };
void main(void){
 char * ptr_char;
 char index;
 // Доступ к [0]
 ptr_char = (char*)iArr; // (char*)&iArr[0]
 printf("0x%02x\n", *(ptr_char + 0)); // 0x34
 printf("0x%02x\n", *(ptr_char + 1)); // 0x12
 // Доступ к [2]
 index=2;
 ptr_char = (char*)&iArr[index];
 printf("0x%02x\n", *(ptr_char + 0)); // 0xbc
 printf("0x%02x\n", *(ptr_char + 1)); // 0x9a
}