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POStructures in C#
 

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  1. POStructures in C#
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    <p>I am using a structure in my program as below:</p> <pre><code>public struct chromo_typ { public string bits; public float fitness; chromo_typ(string bts, float ftns) { bits = bts; fitness = ftns; } }; </code></pre> <p>I am using the constructor defined in the struct i.e. chromo_typ(string bts, float ftns) in my main(). My main() contains the following code:</p> <pre><code>chromo_typ[] temp = new chromo_typ[VM_Placement.AlgorithmParameters.pop_size]; chromo_typ ct = new chromo_typ(); int cPop = 0; //loop until we have created POP_SIZE new chromosomes while (cPop &lt; VM_Placement.AlgorithmParameters.pop_size) { // we are going to create the new population by grabbing members of the old population // two at a time via roulette wheel selection. string offspring1 = p.Roulette(TotalFitness, Population); string offspring2 = p.Roulette(TotalFitness, Population); //add crossover dependent on the crossover rate p.Crossover(offspring1, offspring2); //now mutate dependent on the mutation rate p.Mutate(offspring1); p.Mutate(offspring2); //add these offspring to the new population. (assigning zero as their //fitness scores) temp[cPop++] = ct.chromo_typ(offspring1, 0.0f); temp[cPop++] = ct.chromo_typ(offspring2, 0.0f); }//end loop </code></pre> <p>I am getting the following error at <code>temp[cPop++] = ct.chromo_typ(offspring1, 0.0f);</code> and <code>temp[cPop++] = ct.chromo_typ(offspring2, 0.0f);</code></p> <blockquote> <p>Error: <code>'VM_Placement.Program.chromo_typ' does not contain a definition for 'chromo_typ' and no extension method 'chromo_typ' accepting a first argument of type 'VM_Placement.Program.chromo_typ' could be found (are you missing a using directive or an assembly reference?)</code></p> </blockquote> <p>Am I using structure incorrectly? How can I resolve this?</p>
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    1. USuser1277070
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    1. COYou forgot to use the *new* keyword. A constructor is not a method.
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    2. CODid you mean `temp[cPop++] = new chromo_typ(offspring1, 0.0f);` ?
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      1. USharold
    3. COTried using 'new' keyword i.e. my constructor calling syntax now is "temp[cPop++] = new chromo_typ(offspring1, 0.0f);" but I am getting this error now "'VM_Placement.Program.chromo_typ' does not contain a constructor that takes 2 arguments"
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