计算邮资(信息学奥赛一本通-T1052)

来源:https://blog.csdn.net/u011815404/article/details/79252661
在这里插入图片描述

#include <iostream>
#include <cmath>
using namespace std;
int main()
{
    int m,money;
    char ch;
    cin>>m>>ch;
    if(m>1000) money=8+ceil((m-1000)/500.0)*4;
    else money=8;
    if(ch=='y') money=money+5;
    cout<<money<<endl;
    return 0;
}
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原文链接:https://blog.csdn.net/u011815404/article/details/79252661

要点:1.ceil用法
该函数返回不小于 x 的最小整数值。
*2.money=8+ceil((m-1000)/500.0)4;如果/500而不是/500.0会出错

#include <stdio.h>
#include <math.h>

int main ()
{
   float val1, val2, val3, val4;

   val1 = 1.6;
   val2 = 1.2;
   val3 = 2.8;
   val4 = 2.3;

   printf ("value1 = %.1lf\n", ceil(val1));
   printf ("value2 = %.1lf\n", ceil(val2));
   printf ("value3 = %.1lf\n", ceil(val3));
   printf ("value4 = %.1lf\n", ceil(val4));
   
   return(0);
}
运行结果:
value1 = 2.0
value2 = 2.0
value3 = 3.0
value4 = 3.0
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