Question

I have the following code

#include <stdio.h>
#include <iostream>
#include <stdlib.h>
#include <stdint.h>
using namespace std;
int main(){
    int x;
    cin>>x;
    uint32_t Ex;
    Ex=(x<<1)>>24;
    cout<<Ex<<endl;
    return 0;
}

but it gives 0 for any value of x?

My task is the following:

Computation of the biased exponent Ex of a binary32 datum x.

Answer 1

It is not so much that you get zero for ‘any value of x’ but that you get zero for any positive value of x smaller than 0x01000000 (which is 16777216).

None of this helps much with explaining a ‘biassed exponent of a binary32 datum’. That sounds like the exponent of a 32-bit floating point (IEEE) number. You probably have to worry about endianness of the representation, amongst other things.