C printing bits

Question

I am trying to write a program in C that prints bits of int. for some reason i get wrong values,

void printBits(unsigned int num){
    unsigned int size = si         


        

Answer 1

void print_bits(unsigned int x)
{
    int i;
    for(i=8*sizeof(x)-1; i>=0; i--) {
        (x & (1 << i)) ? putchar('1') : putchar('0');
    }
    printf("\n");
}