求助：sizeof(struct a) 问题
求助：sizeof(struct a) 问题
代码如下：
#include "stdio.h"
/* ++++++++++++++++++ */
int checksize()
{
struct a
{
unsigned char a1;
unsigned short a2;
unsigned char a11;
unsigned long a4;
unsigned char a111;
unsigned short a22;
unsigned char a1111;
}; /*12*/
printf("the sizeof(unsigned char) is: %3d\n\n",sizeof(unsigned char));
printf("the sizeof(unsigned short) is: %3d\n\n",sizeof(unsigned short));
printf("the sizeof(unsigned int) is: %3d\n\n",sizeof(unsigned int));
printf("the sizeof(unsigned long) is: %3d\n\n",sizeof(unsigned long));
printf("the 12-20 sizeof(struct a) is: %3d\n\n",sizeof(struct a));
getchar();
return 1;
}
main()
{
checksize();
return;
}
sizeof(struct a) 应该是12字节，可在VC＋＋中是20字节，在C中也是12字节。请教高手。
