Sum of Consecutive Even Numbers

#include<stdio.h>
int main()
{
    int x,i,count=0,sum=0;
    while(1)
    {
        scanf("%d",&x);
        if(x==0)
            break;
        if(x%2==0)
        {
            for(i=x;; i+=2)
            {
                sum=sum+i;
                count++;
                if(count==5)
                    break;
            }
        }
        else
        {
            for(i=x+1;; i+=2)
            {
                sum=sum+i;
                count++;
                if(count==5)
                    break;
            }
        }
        printf("%d\n",sum);
        sum=0;
        count=0;
    }

    return 0;
}