C不同变量类型存储大小引发的BUG

#include"stdio.h"
typedef  signed     char          int8;
typedef  unsigned   char          uint8;
typedef  signed     short int     int16;
typedef  unsigned   short int     uint16;
typedef  signed     long  int     int32 ;
typedef  unsigned   long  int     uint32;
int main()
{
	int8  num8    =0;
	int16 num16    =0;
    int32 num32    =0;

    int32 numb32    =0;
	int16 numb16    =0;
  	int8  numb8    =0;
	printf("input a number16 :\n");
	scanf("%d",&num16);
	printf("input a number8: \n");
	scanf("%d",&num8);
	printf("input a number32: \n");
	scanf("%d",&num32);
	printf("num16: %d \t num8: %d\t num32: %d \n",num16,num8,num32);
	printf("------------------------------------------------------\n");
	printf("input a number16 :\n");
	scanf("%d",&numb16);
	printf("input a number8: \n");
	scanf("%d",&numb8);
	printf("input a number32: \n");
	scanf("%d",&numb32);
	printf("numb16: %d \t numb8: %d\t numb32: %d \n",numb16,numb8,numb32);	

    getchar();
	printf("\a");	

}