POJ 2871 A Simple Question of Chemistry（水题）
2014-09-24 16:21
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【题意简述】：后一个数减去前一个数并输出。
【分析】：水
【分析】：水
//208K 16Ms
#include<iostream>
using namespace std;
int main()
{
double a;
double b;
bool flag = false;
double ans;
while(cin>>a)
{
if(a==999)
{
cout<<"End of Output"<<endl;
break;
}
if(!flag)
{
b = a;
flag = true;
}
else
{
ans = a-b;
b = a;
printf("%.2f\n",ans);
}
}
return 0;
}
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