magic.c

// Hello world! Cplayground is an online sandbox that makes it easy to try out
// code.

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>

union magic {
    uint8_t buf[4];
    uint32_t magic2;
};

int main() {
    union magic test;
    test.buf[0] = 0x11;
    test.buf[1] = 0x22;
    test.buf[2] = 0x33;
    test.buf[3] = 0x44;
    
    // 44332211
    printf("%x", test.magic2);
    
    return 0;
}