Sicily 1511. Conversions

青旅半醒 2022-08-07 13:53 6阅读 0赞

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        Time Limit: 1sec &nbsp;&nbsp; Memory Limit:32MB 
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        Description 
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       <p>Conversion between the&nbsp;<span>metric</span>&nbsp;and&nbsp;<span>English</span>&nbsp;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:</p> 
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           <td align="left" style="font-family:Verdana; font-size:9pt"> <span>Type</span></td> 
           <td align="left" style="font-family:Verdana; font-size:9pt"> <span>Metric</span></td> 
           <td align="left" style="font-family:Verdana; font-size:9pt"> <span>English equivalent</span></td> 
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           <td align="left" style="font-family:Verdana; font-size:9pt"> <span>Weight</span></td> 
           <td align="left" style="font-family:Verdana; font-size:9pt"> 1.000 kilograms</td> 
           <td align="left" style="font-family:Verdana; font-size:9pt"> 2.2046 pounds</td> 
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           <td style="font-family:Verdana; font-size:9pt">&nbsp;</td> 
           <td align="left" style="font-family:Verdana; font-size:9pt"> 0.4536 kilograms</td> 
           <td align="left" style="font-family:Verdana; font-size:9pt"> 1.0000 pound</td> 
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           <td align="left" style="font-family:Verdana; font-size:9pt"> <span>Volume</span></td> 
           <td align="left" style="font-family:Verdana; font-size:9pt"> 1.0000 liter</td> 
           <td align="left" style="font-family:Verdana; font-size:9pt"> 0.2642 gallons</td> 
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           <td style="font-family:Verdana; font-size:9pt">&nbsp;</td> 
           <td align="left" style="font-family:Verdana; font-size:9pt"> 3.7854 liters</td> 
           <td align="left" style="font-family:Verdana; font-size:9pt"> 1.0000 gallon</td> 
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        Input 
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       <p>The first line of input contains a single integer&nbsp;<span><em>N</em></span>&nbsp;,&nbsp;<span>(1≤<em>N</em>≤1000)</span>&nbsp;which is the number of datasets that follow.</p> 
       <p>Each dataset consists of a single line of input containing a floating point (double precision) number, a space and the&nbsp;<span>unit specification</span>&nbsp;for the measurement to be converted. The&nbsp;<span>unit specification</span>&nbsp;is one of&nbsp;<span style="font-family:新宋体">kg</span>,&nbsp;<span style="font-family:新宋体">lb</span>,&nbsp;<span style="font-family:新宋体">l</span>, or&nbsp;<span style="font-family:新宋体">g</span>&nbsp;referring to kilograms, pounds, liters and gallons respectively.</p> 
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        Output 
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       <p>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&nbsp;<span>unit specification</span>&nbsp;for the converted value.</p> 
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        Sample Input 
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       <img alt="" style="border:0px; vertical-align:middle">&nbsp;Copy sample input to clipboard 
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       <pre style="overflow:auto; font-family:'Courier New',monospace; font-size:12pt; line-height:15pt; border:1px solid; margin-left:10px">5 
1 kg 
2 l 
7 lb 
3.5 g 
0 l
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        Sample Output 
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       <pre style="overflow:auto; font-family:'Courier New',monospace; font-size:12pt; line-height:15pt; border:1px solid; margin-left:10px">1 2.2046 lb 
2 0.5284 g 
3 3.1752 kg 
4 13.2489 l 
5 0.0000 g
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      <h3>Problem Source: Greater New York 2007</h3> 
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       <pre><code>// Problem#: 1511
// Submission#: 3685288
// The source code is licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
// URI: http://creativecommons.org/licenses/by-nc-sa/3.0/
// All Copyright reserved by Informatic Lab of Sun Yat-sen University
#include&lt;iostream&gt;
#include&lt;iomanip&gt;
#include&lt;string&gt;
using namespace std;
int main(){
    int n;
    cin&gt;&gt;n;
    int i=1;
    while(n--){
        //int i=1;
        double a;
        string b;
        cin&gt;&gt;a&gt;&gt;b;
        if(b=="kg"){
            cout&lt;&lt;i&lt;&lt;" "&lt;&lt;fixed&lt;&lt;setprecision(4)&lt;&lt;a*2.2046&lt;&lt;" lb"&lt;&lt;endl;
        }
        else if(b=="l"){
            cout&lt;&lt;i&lt;&lt;" "&lt;&lt;fixed&lt;&lt;setprecision(4)&lt;&lt;a*0.2642&lt;&lt;" g"&lt;&lt;endl;
        }
        else if(b=="lb"){
            cout&lt;&lt;i&lt;&lt;" "&lt;&lt;fixed&lt;&lt;setprecision(4)&lt;&lt;a*0.4536&lt;&lt;" kg"&lt;&lt;endl;
        }
        else if(b=="g"){
            cout&lt;&lt;i&lt;&lt;" "&lt;&lt;fixed&lt;&lt;setprecision(4)&lt;&lt;a*3.7854&lt;&lt;" l"&lt;&lt;endl;
        }
        i++;
        
    }
    return 0;
}                                 </code></pre> 
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