zoj 1242 Carbon Dating

公式对了  但是提交老是错。。

#include<stdio.h>#include<math.h>int main(){int w,d,t,ans=0;double year;while(scanf("%d%d",&w,&d)!=EOF){if(w==0&&d==0)break;printf("Sample #%d\n", ++ans);  year=5730*(log(810*w/d+0.0)/log(2.0));if(year<10000)t=100*(int)(year/100+0.5);elset=1000*(int)(year/1000+0.5); printf("The approximate age is %d years.\n\n", t);  }return 0;}