for
#include<iostream>
using namespace std ;
int main()
{
int a , b ;
cin>> a;
for ( int n = a ; ; n ++ )
{
b = n /1000 + n % 1000 / 100 + n% 100 / 10 + n % 10;
if ( b % 4 == 0)
{ cout << n ;break ;}
}
return 0 ;
}
while
#include<iostream>
using namespace std ;
int main()
{
int a , b ;
cin>> a;
int n = a-1 ;
while( n ++ )//while是从n+1开始
{
b = n /1000 + n % 1000 / 100 + n% 100 / 10 + n % 10;
if ( b % 4 == 0)
{ cout << n ;break ;}
}
return 0 ;
}