逻辑移位与算术移位

#include <conio.h>
#include <stdio.h>
int fun1 (unsigned word)
{
return (int) ((word << 24) >> 24);
}

int fun2 (unsigned word)
{
return ((int) word << 24) >>24;
}
int main()
{
unsigned  a;
while(1)
{
scanf("%d",&a);
printf("%d,%d\n",fun1(a),fun2(a));
}
getch();
return 0;
}