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POInitializing a Vector of Objects from a .txt file
 

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  1. POInitializing a Vector of Objects from a .txt file
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    <pre><code>#include&lt;iostream&gt; #include&lt;vector&gt; #include&lt;fstream&gt; #include "stock.h" int main(){ double balance =0, tempPrice=0; string tempStr; vector &lt; Stock &gt; portfolio; typedef vector&lt;Stock&gt;::iterator StockIt; ifstream fileIn( "Results.txt" ); for(StockIt i = portfolio.begin(); i != portfolio.end(); i++) { while ( !fileIn.eof( )) { getline(fileIn,tempStr); i-&gt;setSymbol(tempStr); fileIn &gt;&gt; tempPrice; i-&gt;setPrice(tempPrice); getline(fileIn,tempStr); i-&gt;setDate(tempStr); } fileIn.close(); } for(StockIt i = portfolio.begin(); i != portfolio.end(); i++){ cout&lt;&lt;i-&gt;getSymbol() &lt;&lt;endl; cout&lt;&lt;i-&gt;getPrice() &lt;&lt;endl; cout&lt;&lt;i-&gt;getDate() &lt;&lt;endl; } return 0; </code></pre> <p>}</p> <p>Sample text file, Results.txt:</p> <pre><code>GOOG 569.964 11/17/2010 MSFT 29.62 11/17/2010 YHOO 15.38 11/17/2010 AAPL 199.92 11/17/2010 </code></pre> <p>Now obviously, I want this program to create a vector of Stock Objects which has the appropriate set/get functionality for object: <code>Stock(string, double, string)</code>.</p> <p>Once that is done, I want to print out each individual member of each Object in the vector. </p> <p>One thing that boggles my mind about <code>fstream</code>, is how can it decipher spaces and end of lines, and intelligently read strings/ints/doubles and place them into the appropriate data type? Maybe it can't...and I have to add an entirely new functionality? </p> <p>now it would seem that I'm not actually creating a new object for each iteration of the loop? I <em>think</em> would need to do something along the lines of:</p> <p><code>portfolio.push_back(new Stock(string, double, string));</code>? I'm just not entirely sure how to get to that point.</p> <p>Also, this code should be interchangeable with <code>std::list</code> as well as <code>std::vector</code>. This program compiles without error, however, there is zero output.</p>
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    1. USStaypuft
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      1. USMarlon
 

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