poj1563---蜗牛爬井

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int dayTh;
    float Udis,currentHeight,firstClaim,HeightOfWell,downDis,fagtigue;
    while(scanf("%f %f %f %f",&HeightOfWell,&Udis,&downDis,&fagtigue)!=EOF){
        if(HeightOfWell==0)
            break;
        currentHeight=0;
        firstClaim=Udis;
        dayTh=0;
        while(1){
            currentHeight+=Udis;
            Udis-=fagtigue/100*firstClaim;
            if(Udis<0)
                Udis=0;
            dayTh++;
            if(currentHeight>HeightOfWell){
                printf("success on day %d
",dayTh);
                break;
            }
            else{
                currentHeight-=downDis;
                if(currentHeight<0)
                    {
                        printf("failure on day %d
",dayTh);
                        break;
                    }
                }
        }
    }
    return 0;
}

WA过，注意当Udis<0,Udis=0；变量都赋值成float