tim.c

#include <stdio.h>

//assumes little endian
void printBits(size_t const size, void const * const ptr)
{
    unsigned char *b = (unsigned char*) ptr;
    unsigned char byte;
    int i, j;

    for (i=size-1;i>=0;i--)
    {
        for (j=7;j>=0;j--)
        {
            byte = (b[i] >> j) & 1;
            printf("%u", byte);
        }
    }
    puts("");
}


int main(void)
{
	unsigned int number = 0b10001001000000000000000000111100;
	printBits(sizeof(number), &number);
	
	unsigned int unsignedpart = number << 11 >> 11;
	printBits(sizeof(unsignedpart), &unsignedpart);
	
	unsigned int signedpart = number << 1 >> 22;
	printBits(sizeof(signedpart), &signedpart);
	
	unsigned int sign = number >> 31;
	printBits(sizeof(sign), &sign);
	
	if (sign == 1) {
		unsigned int fixedsign = signedpart ^ 0b10000000000000000000000000000000;
		printBits(sizeof(fixedsign), &fixedsign);
	}
}