帮忙解决个初级的C语言编程

#include <stdio.h>
void main()
{
int n;
printf ("请输入一个正整数:");
scanf ("%d",&n);
if (n%15==0)
printf ("%d能够被15整除。\n",n);
else
printf ("%d不能够被15整除。\n",n);
}

.................................

#inlcude "stdio.h"

void main()
{
int test;
printf("Please input the test date!");
scanf("%d".&test);
if (!(test%15))
pirntf("The date you input can be divisible by 15.");

}

fun(){
int x;

scanf(%d,&x);
if(x%15==0){
printf("ok");

}else{
printf("no");
}
}