View Code of Problem 13

#include<stdio.h> 
#include<string.h>
int main(){ 
    int i,j,a,b,k,h,n=1,flag;
    while(scanf("%d%d%d%d",&h,&a,&b,&k)!=EOF){
    	flag=0;
    	
    	while(k--){
    		h=h-a;
    	if(h<1){
    		flag=1;
    		break;
		} 
        else h+=b;
		}
    	if(flag==0) printf("Case #%d: Unknow\n",n++);
    	else printf("Case #%d: White win\n",n++);
	}
    
	return 0;
}