#include "stdio.h"

const int SIZE = 12;

int _tmain(int argc,_TCHAR * argv[]) {
    unsigned char c[SIZE] = {
        1,2,3,4,5,6,7,8,9,10,11,12
    };
    unsigned int * ptr = (unsigned int * ) c;
    int i;

    printf("Int size=%d\n",sizeof(unsigned long));

    for (i = 0; i < sizeof(c); i++) {
        printf("%X,",c[i]);
    }
    printf("\n\n");

    for (i = 0; i < sizeof(c) / sizeof(unsigned long); i++) { * ptr++ = i;
    }

    for (i = 0; i < sizeof(c); i++) {
        printf("%X,c[i]);
    }

    printf("\n");
    return 0;
}

这是输出：

Int size=4
1,A,B,C,1,