Explore endianness.

endian.m

#import <Foundation/Foundation.h>

// Xcode_3_2_6/usr/bin/gcc -arch ppc -std=c99 -isysroot /Xcode_3_2_6/SDKs/MacOSX10.5.sdk -g -Wall -framework Foundation -o endian-ppc ~/Downloads/endian.m  (thanks to Jeremy W. Sherman for the assist)

// clang -arch x86_64 -g -Weverything -framework Foundation -o endian endian.m


int main (void) {
    unsigned int values[] = { 1, 387, 8533937 };

    printf ("scan by ints\n");
    for (unsigned int i = 0; i < sizeof(values) / sizeof(*values); i++) {
        printf (" 0x%08x", values[i]);
    }
    printf ("\n");

    printf ("scan by bytes\n");

    for (unsigned int i = 0; i < sizeof(values); i++) {
        if (i % 4 == 0) printf (" 0x");
        printf ("%02x", ((unsigned char *)values)[i]);
    }
    printf ("\n");


    return 0;

} // main


#if 0
Outputs:

scan by ints
 0x00000001 0x00000183 0x008237b1
scan by bytes
 0x01000000 0x83010000 0xb1378200

#endif