UVa 11689 Soda Surpler Solution

#include<stdio.h>
int main()
{
int e,f,c,t,sum,fb,eb,i;
while(scanf("%d",&t)==1)
{
i=1;
while(i<=t)
{
sum=0;
scanf("%d%d%d",&e,&f,&c);
eb=e+f;
while(eb>=c)
{
fb=eb/c;
sum=sum+fb;
eb=fb+eb%c;
}
i++;
printf("%d\n",sum);
}
}
return 0;
}