37.给定一个数，除去其中的偶数位，从新按照高地位输出

<pre name="code" class="cpp">#include<stdio.h>
void fun(unsigned long *n)
{
unsigned long x = 0, i;
int t;
i = 1;
while (*n)
{
t = *n % 10;
if (t % 2 != 0)
{
x = x + t*i;
i = i * 10;

}
*n = *n / 10;
}
*n = x;
}
int main()
{
unsigned long x = -1;
while (x > 99999999 || x < 0)
{
printf("Please input(0<x<999999999):");
scanf_s("%ld", &x);
}
fun(&x);
printf("\nThe result if:%ld\n", x);
getchar();
getchar();
return 0;
}