它不报错和报警告，但是编译运行的时候就会停止程序  然后就不正常没有程序的功能了 下面是代码和提示#include <stdio.h>
void main()
{

int year,leap;
scanf("%d",year);
   if (year%4==0)
   {
       if (year%100==0)
       {
           if (year%400==0)
           {
                 leap=1;      
           }
           else
           {
                 leap=0;
           }
        }
        else
        {
             leap=1;
        }
    }
    else{
           leap=0;
        }
   if (leap)
   {
       printf("%d is",year);
   }
   else
   {
      printf("%d is not",year);
   }
   printf("a lerp \n");
  
}
提示  --------------------Configuration: wanwan - Win32 Debug--------------------
Compiling...
if.c
F:\C语言截图\wanwan\if.c(6) : warning C4700: local variable 'year' used without having been initialized

if.obj - 0 error(s), 0 warning(s)