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POA bug of using for loop to print out matrix in my program
 

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  1. POA bug of using for loop to print out matrix in my program
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    <p>I wrote the following code to test in <code>int main()</code></p> <pre><code>int main() { int *p1 = findmatrixsize("inputmatrix.txt","A");//A function gets matrix size cout &lt;&lt; p1[0] &lt;&lt; endl &lt;&lt; p1[1] &lt;&lt; endl; int *p2 = findmatrixsize("inputmatrix.txt","B"); cout &lt;&lt; p2[0] &lt;&lt; endl &lt;&lt; p2[1] &lt;&lt; endl; double **C = normalmultiplication("inputmatrix.txt","A", "B"); cout &lt;&lt; C[0][0] &lt;&lt; endl; ofstream fout; const string s="outputmatrix.txt"; fout.open(s); for(int i=0;i&lt;p1[0];i++){ for(int j =0;j&lt;p2[1];j++){ fout &lt;&lt; C[i][j] &lt;&lt; " "; } fout&lt;&lt; endl; } fout.close(); return 0; } </code></pre> <p>Everything works except when I am executing the multiarray printing. Here is the problem:</p> <p>1.If I comment out the printing part, <code>p1[0],p1[1],p2[0],p2[1],C[i][j]</code> gives me perfect and correct result that I want.</p> <p>2.However, when I print by using normal loops it doesn't work. But, but,but, if I change the <code>p1[0],p2[1]</code> in the for loop to a concrete number like 3(when my matrix dimension is 3), it works again. </p> <p>3.It compiles, but the for loop printing part is not written into the txt. When I changed it to the standard print cout(not only the single line, I mean the whole method), I couldn't see them in the terminal neither. But as I mentioned above, when I change p[0] p[1] to 3, it works, which means I can see them either in the txt or terminal </p> <p>I have never met such weird situation in C++ before, so I hope someone can help me out!</p> <p>FYI, I use Visual Studio 2010 as compiler.</p> <p>Thanks for your help!</p>
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    2. COIt compiles, but the for loop printing part is not written into the txt. When I change it to the standard print cout(not only the single line, I mean the whole method), I can't see them in the terminal neither. But as I mentioned above, when I change p[0] p[1] to 3, it works, which means I can see them either in the txt or terminal
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      1. POA bug of using for loop to print out matrix in my program
      1. USCancan
 

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