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POiterate through an array of vector in c++
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  1. POiterate through an array of vector in c++
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    copied!<p>I am trying to iterate through my vector array, but I cannot seem to get it to work, my error is at the second for loop and the error message is the follow:</p> <blockquote> <p>expected primary expression before 'double'</p> </blockquote> <p>I have looked through on how to iterate a regular vector, but how do I iterator a vector array? I followed this structure:</p> <pre><code>#include &lt;iostream&gt; #include &lt;vector&gt; int main () { std::vector&lt;int&gt; myvector; for (int i=1; i&lt;=5; i++) myvector.push_back(i); std::cout &lt;&lt; "myvector contains:"; for (std::vector&lt;int&gt;::iterator it = myvector.begin() ; it != myvector.end(); ++it) std::cout &lt;&lt; ' ' &lt;&lt; *it; std::cout &lt;&lt; '\n'; return 0; } </code></pre> <p>I can't seem to get my vector array version to work. </p> <pre><code>#include &lt;iostream&gt; #include &lt;fstream&gt; #include &lt;vector&gt; using namespace std; int main(int arc, char *argv[]) { vector&lt;double&gt; vector[7]; double num[7]; ifstream infile("data.txt"); string temp; for(int i = 0; i &lt;= 6; i++) { infile &gt;&gt; temp; cout &lt;&lt; temp &lt;&lt; ' '; } cout &lt;&lt; endl; while(infile &gt;&gt; num[0] &gt;&gt; num[1] &gt;&gt; num[2] &gt;&gt; num[3] &gt;&gt; num[4] &gt;&gt; num[5] &gt;&gt; num[6]) { for(int i = 0; i &lt;= 6; i++) { vector[i].push_back(num[i]); } } cout &lt;&lt; endl; for(int i = 0; i &lt;= 6; i++) { // error on this line // not sure what is wrong before vector&lt;double&gt;:: iterator it = vector[i].begin() for(vector&lt;double&gt;::iterator it = vector[i].begin(); it != vector[i].end(); ++it) { cout &lt;&lt; ' ' &lt;&lt; *it; } } return 0; } </code></pre>
 

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