for_alex2.cpp

#include <stdio.h>
#include <string.h>

union FloatByteStorage {
    char bytes[4];
    float number;
};

int main(int, char**) {
    FloatByteStorage storage;

    // Encoding
    storage.number = 0.543;
    printf("%f consists of %X:%X:%X:%X\n",  storage.number, storage.bytes[0], storage.bytes[1], storage.bytes[2], storage.bytes[3]);
    
    // Decoding
    storage.bytes[0] = 0xC; storage.bytes[1] = 0x2; storage.bytes[2] = 0xB; storage.bytes[3] = 0x3F;
    printf("%X:%X:%X:%X compose %f\n", storage.bytes[0], storage.bytes[1], storage.bytes[2], storage.bytes[3], storage.number);
    return 0;
}