Conversions（水）

最新推荐文章于 2024-08-09 07:30:50 发布

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#dataset #integer #input #output #string #each

Conversions

Time Limit: 1000/500 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 1054 Accepted Submission(s): 618

Problem Description

Conversion between the metric and English measurement systems is relatively simple. Often, it involves either multiplying or dividing by a constant. You must write a program that converts between the following units:

Input

The first line of input contains a single integer N, (1 ≤ N ≤ 1000) which is the number of datasets that follow.
Each dataset consists of a single line of input containing a floating point (double precision) number, a space and the unit specification for the measurement to be converted. The unit specification is one of kg, lb, l, or g referring to kilograms, pounds, liters and gallons respectively.

Output

For each dataset, you should generate one line of output with the following values: The dataset number as a decimal integer (start counting at one), a space, and the appropriately converted value rounded to 4 decimal places, a space and the unit specification for the converted value.

Sample Input

  
   5
1 kg
2 l
7 lb
3.5 g
0 l

Sample Output

  
   1 2.2046 lb
2 0.5284 g
3 3.1752 kg
4 13.2489 l
5 0.0000 g

Source

2008 “Shun Yu Cup” Zhejiang Collegiate Programming Contest - Warm Up（1）

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#include <iostream>
#include <string>
#include <cstdio>
#include <cmath>
#include <cstring>
#include <algorithm>
#define LL long long
#define maxi 2147483647
#define maxl 9223372036854775807
#define dg cout << "Here!" << endl;
using namespace std;

int main()
{
    int n, t = 1;
    double a;
    string s;
    cin >> n;
    while(n--)
    {
        cin >> a >> s;
        if(s == "kg")
           printf("%d %.4lf lb\n", t++, a * 2.2046);
        else if(s == "lb")
            printf("%d %.4lf kg\n", t++, a * 0.4536);
        else if(s == "l")
            printf("%d %.4lf g\n", t++, a * 0.2642);
        else if(s == "g")
            printf("%d %.4lf l\n", t++, a * 3.7854);
    }
    return 0;
}