求教编程里的错误，对指针不太理解

Question

#include
#include

/************FOUND************/
void fun (long s, long t)
{ long sl=10;
t =s % 10;
while ( s > 0)
{ s = s/100;
*t = *s%10 * sl + t;
/***********FOUND************/
sl = sl*100;
}
}

main()
{ long s, t;
printf("\nPlease enter s:"); scanf("%ld", &s);
fun(s, &t);
printf("The result is: %ld\n", t);
}

这个编程哪里错了，求得是输入一个数字把它的奇数位置数字取出。

Answer 1

函数原型应该是 ：void fun (long s, long t)个样子
void fun (long s, long *t)
{ long sl=10;
*t =s % 10;
while ( s > 0)
{ s = s/100;
*t = *s%10 * sl + *t;
/**********FOUND************/
sl = sl*100;
}
}