how do you do a type casting in one line in c?

Question

how do you do a type casting in one line in c?

unsigned char num[4]={0,2}; //512 little endian
unsigned int * ptr = num;

printf("%u\n", *ptr); // 512

//trying to do the same underneath in one line but it dosen't work    
printf("%u\n", (unsigned int *)num); //