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POInitialising float matrix inside function
 

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  1. POInitialising float matrix inside function
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    <p>I got this problem when trying to initialize global c++ matrix(2D array) inside a function:</p> <p>here is what I'm doing</p> <pre><code>#include &lt;iostream&gt; #include &lt;math.h&gt; #include &lt;Windows.h&gt; using namespace std; float matrix[5][5]; void setIR(){ matrix[5][5]= { { 17.2, 22.75, 2.5, -9.15, 0.2}, { 22.75, 145.5, 9.25, 20.75, 5.25 }, { 2.5, 9.25, 76.5, -15.5, -6.0 }, { -9.15, 20.75, -15.5, 37.3, -25.65 }, { 0.2, 5.25, -6.0, -25.65, 41.2 } }; int main(){ //rest of the code ...... } </code></pre> <p>I'm getting only bunch of </p> <pre><code>1&gt;c:\users\apple\documents\visual studio 2010\projects\jcb\jcb\jcbPIO.cpp(46): error C2059: syntax error : '{' 1&gt;c:\users\apple\documents\visual studio 2010\projects\jcb\jcb\jcbPIO.cpp(46): error C2143: syntax error : missing ';' before '{' 1&gt;c:\users\apple\documents\visual studio 2010\projects\jcb\jcb\jcbPIO.cpp(47): error C2143: syntax error : missing ';' before '}' 1&gt;c:\users\apple\documents\visual studio 2010\projects\jcb\jcb\jcbPIO.cpp(47): error C2143: syntax error : missing ';' before ',' 1&gt;c:\users\apple\documents\visual studio 2010\projects\jcb\jcb\jcbPIO.cpp(48): error C2143: syntax error : missing ';' before '{' 1&gt;c:\users\apple\documents\visual studio 2010\projects\jcb\jcb\jcbPIO.cpp(48): error C2143: syntax error : missing ';' before '}' 1&gt;c:\users\apple\documents\visual studio 2010\projects\jcb\jcb\jcbPIO.cpp(48): error C2143: syntax error : missing ';' before ',' 1&gt;c:\users\apple\documents\visual studio 2010\projects\jcb\jcb\jcbPIO.cpp(49): error C2143: syntax error : missing ';' before '{' 1&gt;c:\users\apple\documents\visual studio 2010\projects\jcb\jcb\jcbPIO.cpp(49): error C2143: syntax error : missing ';' before '}' 1&gt;c:\users\apple\documents\visual studio 2010\projects\jcb\jcb\jcbPIO.cpp(49): error C2143: syntax error : missing ';' before ',' 1&gt;c:\users\apple\documents\visual studio 2010\projects\jcb\jcb\jcbPIO.cpp(50): error C2143: syntax error : missing ';' before '{' 1&gt;c:\users\apple\documents\visual studio 2010\projects\jcb\jcb\jcbPIO.cpp(50): error C2143: syntax error : missing ';' before '}' 1&gt;c:\users\apple\documents\visual studio 2010\projects\jcb\jcb\jcbPIO.cpp(50): error C2143: syntax error : missing ';' before ',' 1&gt;c:\users\apple\documents\visual studio 2010\projects\jcb\jcb\jcbPIO.cpp(51): error C2143: syntax error : missing ';' before '{' 1&gt;c:\users\apple\documents\visual studio2010\projects\jcb\jcb\jcbPIO.cpp(51): error C2143: syntax error : missing ';' before '}' </code></pre> <p>I'm doing something wrong or C++ limitation ?</p>
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    1. USSome programmer dude
    1. USuser1725544
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      1. VTUpMod
    1. COIf you want a C++ solution I recommend you change to use [`std::vector`](http://en.cppreference.com/w/cpp/container/vector) or [`std::array`](http://en.cppreference.com/w/cpp/container/array) instead.
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      1. POInitialising float matrix inside function
      1. USSome programmer dude
    2. COYou're doing something wrong. You can only initialise an array where it is declared. In your case, move the initialisation to the file scope declaration and delete `setIR`.
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      1. USDaniel Fischer
    3. COAlternately, if you **really** need to delay initialization for some reason (or want to be able to re-initialize), you could always use a nested loop. Or keep a copy that is initialized on compile, and memcpy it to the one you'll be using (and possibly modifying?) at runtime.
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      1. USjpm
 

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